Not all food storage containers are safe—many leach chemicals like bisphenols, phthalates, heavy metals, or even formaldehyde into your food. Even some “non-toxic” bamboo-based options pose risks.
The key to choosing the best non-toxic Tupperware is knowing which materials are truly safe and which are gimmicks…
Plastics, even “BPA-free” options, still contain hormone-disrupting chemicals. Some non-stick options, ceramics, and even certain stainless steels, silicones, and glass may also leach toxins.
The safest choices? Specific glass and stainless steels, select silicones, and certain ceramics. These help keep food fresher, longer, and without contamination.
But with endless brands and “safe” materials, how do you find the best options? You’re in the right place—
Using my experience designing, manufacturing, and testing non-toxic kitchenware, we’ll break down the safest food and produce storage materials for daily and long-term storage. We’ll also explain what to avoid and the 11 best brands for safety and nutrient preservation.
Let’s dive in!
Medically fact-checked by Dr. Ahmad Alsayes, MBBS
Top 4 Picks: At a Glance
1. Urban Green (Top Choice Overall): After swapping my Pyrex for Urban Green, it quickly rose to my top pick. It replaces soda-lime with borosilicate glass and swaps plastic lids with silicone and glass. Its traditional sizes make it an easy switch from standard Tupperware.
2. Bentgo MicroSteel: Microwave-safe stainless steel, combining extreme durability with the convenience of glass for quick reheating.
3. Bee’s Wraps: U.S.-made, organic, non-toxic alternative to plastic bags and Saran wrap that keeps produce and cheese fresh longer.
4. EcoLunchBox: 100% leak-proof, rugged, and plastic-free options for mess-free travel and silicone-topped steel snack cups perfect for kids.
What to Avoid Using for Truly Non-Toxic Food Storage
- Plastic containers (includes “BPA-free”)
- Containers with bamboo parts (melamine risks)
- Old or scratched cookware, foil trays, etc. (aluminum risks)
- High-risk ceramics & glass (lead risks)
- Takeout containers & non-stick pots (PFAS risks)
All Plastics: Plasticizer Risks
Traditional plastic containers (and lids) often contain plasticizers like bisphenols, phthalates, and stabilizers. These chemicals “are not bound to plastics and may easily leach into food under certain conditions,” according to the NIH. Plastic manufacturing also contributes to climate change, and microplastics harm both human and environmental health.
How plastic leaches: Worn surfaces, heat, UV exposure, or *contact (*especially prolonged contact) with acidic or fatty foods like oils or cheeses. The NCHR explains that even “dishwasher-safe” and “microwave-safe” plastics don’t mean they’re non-toxic—they just won’t melt. Because these chemicals pose health risks, plastic is a poor choice for food storage, especially long-term.
Main Chemical Leaching Risks:
Bisphenols (BPA & BPS/ BPF in “BPA-free” Containers): Found in clear plastics like polycarbonate containers and water bottles, often marked with recycling code #7. While BPA was mostly banned in 2012 due to health risks, some plastics still contain it, especially cheap Dollar store options.
“BPA-free” plastics are misleading— The NIH states that “BPS and BPF (BPA’s replacements) are as carcinogenic as BPA and are not good alternatives.”
Phthalates: Found in flexible plastics like food packaging, plastic wraps, and PVC plastics (#3 recycling code). They can potentially leach into food, disrupt hormones, and cause reproductive issues [EWG].
Other harmful chemicals that can leach: Flame retardants, found in black plastic kitchen utensils, linked to cancer and neurotoxicity [ScienceDirect]. Colorants, with some containing heavy metals that pose health risks. Stabilizers in older plastics often contain lead or cadmium. Processing aids (used during production) may contain PFAS chemicals.
Staying Safe: Avoid storing food in any plastic container, including BPA-free plastics and glass options with plastic lids.
Containers with “Bamboo” Lids: Melamine Risks
Melamine, used in most “eco-friendly” bamboo products, helps bind bamboo fibers into shapes like dishware. However, it contains formaldehyde.
The German Federal Institute for Risk Assessment warns that “at higher temperatures, harmful amounts of melamine and formaldehyde can migrate from the tableware into food.” They also found that “bamboo-ware” releases even higher amounts of formaldehyde than non-bamboo options (like melamine plastics).
Chronic exposure can cause kidney stones and renal failure, as seen in a 2008 China incident that led to 50,000 hospitalizations and six deaths.
Staying Safe: Avoid food storage with bamboo parts, like lids, for hot foods or liquids unless labeled “melamine-free.”
Disposable Foil Trays & Old Cookware: Aluminum Risks
Aluminum foil trays are widely used for storing and transporting food. These containers are best reserved for single-use, like catering, not storing and reheating food.
Why? Bare aluminum is reactive and can leach into food, especially with salty or acidic ingredients, high heat, and lengthy storage. While definitive health risks of excess aluminum remain debated, it shares links to neurotoxicity. Plus, leached aluminum can give dishes a metallic taste.
Staying Safe: Avoid using foil trays, as well as old, bare aluminum cooking pots to store acidic leftovers. Due to its aluminum core, the same goes for any deeply scratched non-stick pan (Teflon or ceramic-coated).
High-Risk Ceramics & Glass: Lead & Cadmium Risks
Lead and cadmium can leach when reheating acidic foods or during prolonged food storage, especially in items with worn glazes.
Lead is common in older ceramics with lead-based glazes and glass with colorful markings/ tints or leaded crystal. Vintage ceramics and glass (like Pyrex pre-1970s) present the highest risk. Exposure can cause cognitive impairments in children, kidney damage, and nervous system harm in adults.
Cadmium is used for vibrant colors in ceramics, especially red, yellow, and orange. It’s linked to kidney damage, osteoporosis, and cardiovascular disease.
Staying Safe: Avoid storing or reheating food in vintage or second-hand ceramics and glass. Use modern, undecorated, and 3rd-party tested items in good condition.
Some Takeout Containers & Non-Stick Pots: PFAS Risks
PFAS “forever chemicals” are grease- and friction-resistant. Their most famous use is in non-stick cookware (like Teflon). Researchers also found them in food packaging like fast-food wrappers, microwave popcorn bags, and paperboard or HDPE plastic take-out containers.
The NIH explains that PFAS can leach into food, especially when exposed to heat, grease, or acid (like citrus).
Exposure to PFAS shares links to developmental effects (low birth weight, early puberty), liver and kidney damage (including cancer), and immune system impairment. These chemicals accumulate in the body and environment, causing long-term contamination.
Staying Safe: Avoid storing hot, acidic foods in PFAS-treated containers. Or storing and reheating fatty leftovers in an old, scratched Teflon saucepan, for example.
Best Non-Toxic Tupperware Materials & Top Brands for Each
What is a Non-Toxic Food Storage Container?
Safe containers should not leach chemicals, stain, or change flavors, regardless of food or temperature. They must meet FDA or Prop 65 standards and avoid plastics, melamine-based bamboo, or worn-out ceramics/tinted glass. Sustainability is also key, so materials should be durable and highly recyclable, and brands should minimize emissions and plastic packaging.
Safest Materials for Food Storage (Click to jump ahead):
Next, let’s cover some extra crucial considerations for safe food storage. Why?
While these materials are non-toxic, some aren’t cut and dry. For example, damaged steel or ceramics may leach metals; some silicone contains fillers.
So, let’s explore these materials in-depth and highlight the safest brands for each now. Later, we’ll explore each brand pick in much greater detail. Or, Jump to In-Depth Reviews Now
Glass: Best non-toxic Tupperware alternative
Glass containers are non-toxic, non-reactive, and don’t leach chemicals. They’re the safest option for storing all types of food long-term, as even some stainless steel can leach metals into acidic foods over time.
Glass won’t absorb odors or stains like silicone can, either, and it never affects the taste of acidic foods. Its smooth surface also prevents bacterial growth, reducing the risk of cross-contamination.
While clear glass allows easy identification of contents, it doesn’t block light like stoneware. This makes it less ideal for preserving light-sensitive nutrients. That said, an airtight lid is still the key to preservation.
Glass is fully recyclable, microwave, dishwasher, freezer, and oven-safe. Its endless variety makes glass a highly versatile alternative to plastic Tupperware. But…
Note: Not all glass Tupperware is 100% safe for storing food. Some may present health risks; others are less sustainable (break more easily). The following details are vital for choosing the safest and best non-toxic glass storage containers…
1. Borosilicate vs. Soda-Lime Glass: Which is Better?
✅ Borosilicate Glass (Best for Durability, Versatility & Meal Prep):
- Made from silica & boron trioxide, it doesn’t leach chemicals & is free from PFAS, plasticizers (BP’s, etc.), & metals. It’s FDA-approved for food safety & easy to identify by manufacturer labels.
- Durable & highly resistant to temperature changes. It’s ideal for boiling water or moving quickly between freezers & ovens/ microwaves without cracking.
- It’s more expensive than soda-lime glass.
- Best Uses: High-heat cooking & daily microwave or oven reheating like meal prep & leftovers.
✅ Soda-Lime Glass (Good for Fridge & Pantry Storage):
- Less expensive, it’s the most common glass used for food storage. Ball (mason jars) & Pyrex use soda-lime. It contains silica, soda ash, & limestone, making it slightly softer than borosilicate but still non-toxic for food storage.
- Tempered options, like Pyrex, can be more durable against breakage from drops specifically.
- Fine for gradual heating, like moving from room temperature to the oven, but it can break if exposed to sudden temperature changes.
- Best Uses: Everyday fridge & pantry storage. It’s better to reheat food on a separate plate to avoid stressing the glass.
2. How to Tell if Glass is Food-Safe? What to Avoid
🚫 Leaded Crystal Glass:
- Often used in decorative glassware, leaded crystal glass contains up to 24% lead oxide, making it heavier & more brilliant. It can leach lead into food over time.
- To tell if glass is crystal, it’ll be noticeably heavier & produce a bell-like ring when tapped versus the dull “clink” of non-leaded glass.
🚫 Colored, Tinted, or Decorated Glass:
- Some older or cheaper glass containers may contain lead or cadmium in colorful designs & tints. Some may also have resin coatings containing BPA.
🚫 Recycled or Unknown Glass Types:
- Low-quality, unbranded glass jars & containers, mainly imported or cheap options from Dollar Tree, may use mixed recycled glass that contains lead.
💡 Key Takeaway: What is the most non-toxic glass?
Stick to borosilicate or soda-lime glass from trusted brands that certify their glass as food-safe and lead-free. Avoid glass with colors, tints, or coatings, as well as recycled glass that may contain contaminants. Opt for clear, non-decorated glass and avoid plastic lids (e.g., Pyrex Simply Store), which can leach chemicals when touching hot foods.
Best & Safest Glass Brands:
Urban Green: Borosilicate glass containers with silicone-framed glass lids. They’re oven, microwave, and freezer-safe, and their traditional sizing makes them a great non-toxic alternative to standard Tupperware. [Jump to Full Review]
Anyday: Frosted borosilicate glass bowls with LFGB-certified silicone seals. Their steam-circulating design prevents drying and leaks, making them ideal for freezer-to-microwave meals. [Jump to Full Review]
Frego: Borosilicate glass containers with silicone lids and sleeves for added durability and grip. Safe for freezing, microwaving, and reheating; perfect for kids’ lunches and on-the-go. [Jump to Full Review]
Kilner: Entirely borosilicate glass jars with leak-proof, airtight silicone seals, perfect for preserving pantry items. [Jump to Full Review]
Stainless Steel: Most Rugged; Ideal for Bumpy Transport
Stainless steel is a top choice for safe, durable food storage. It won’t leach chemicals, stain, or alter flavors. Lightweight yet crack- and corrosion-resistant, it’s perfect for travel. However, avoid cheaper 201-grade options, which rust more easily; choose 304 (18/8) or 18/10-grade.
Stainless steel also blocks UV light, preserving light-sensitive nutrients like riboflavin and folate. And its non-porous surface resists bacteria, reducing cross-contamination. Paired with an airtight lid, it keeps food fresh longer. Plus, it’s sustainable—100% recyclable without quality loss.
Drawbacks & Safety Considerations:
- Most stainless steel containers aren’t microwave-safe, minus an exception listed below, limiting practicality.
- Thinner options can warp from sudden temperature changes.
- Nickel & chromium leaching may occur when heating or storing acidic foods for long periods. Safe for most, but can cause rashes in those with severe allergies.
- Some ceramic-coated steel containers may contain titanium dioxide. We discuss this in greater detail later – see: Is Caraway food storage non-toxic?
Best Uses:
- On-the-Go Meals: Great for snacks, sandwiches, & salads that don’t need reheating.
- Outdoor Activities: Durable enough for camping, hiking, & picnics.
- Non-acidic Long-Term Storage: Ideal for dry goods & non-acidic refrigerated leftovers.
Best & Safest Stainless Steel Brands:
U-Konserve: Durable, non-toxic 18/8 stainless steel containers with clear, leak-resistant silicone lids, providing convenient visibility without plastic or breakage risks like glass. [Jump to Full Review]
Bentgo MicroSteel: Uniquely-designed microwave-safe stainless steel containers with food-grade silicone lids for durable, mess-free reheating. Ideal for meal prep and bumpy travel. [Jump to Full Review]
EcoLunchBox: Their Wet Boxes are durable, 100% leak-proof stainless steel containers with watertight silicone seals, perfect for wet meals on the go and rugged use. Plastic-free with child-friendly designs, they’re versatile for the whole family. [Jump to Full Review]
Silicone: Flexible, lightweight Ziploc alternative
Silicone is a non-toxic, durable, and flexible option for food storage. It is free from bisphenols, phthalates, and plasticizers. It’s inert (won’t react with food) and is easy to clean, helping prevent cross-contamination. Opaque silicone is best for preserving food, as it blocks light and slows microbial growth.
Silicone is more durable than plastic. It won’t shatter like glass or ceramic, and it handles extreme heat changes without warping, unlike thin steel. Its softness also makes it safe for kids.
Choose FDA or LFGB-certified food-grade silicone, with LFGB being the safest. Platinum-cured silicone is the best option for food storage because it is pure (filler-free), durable, and resistant to odors.
Drawbacks & Safety Considerations:
- Lower-quality silicone (like peroxide-cured) potentially leach chemical fillers like talc or oils when heated. To check for fillers, twist the silicone—if it turns white, it likely contains them.
- Lower-quality options can also stain or absorb odors from onions & fish. But, you can remove stains/ odors by soaking in hot water & baking soda.
- Silicone’s flexibility can lead to spills if not sealed properly.
- Limited product variety compared to other materials.
- Not biodegradable & hard to recycle.
- Manufacturing residues may remain on new silicone—must wash before use.
Best Uses:
- Ziploc Alternative: Great for snacks, sandwiches, & leftovers.
- Collapsible Containers: Space-saving for small kitchens or travel, though not always leak-proof.
- Protective Sleeves: Adds grip & prevents breakage on glass or stainless steel, which is ideal for kids.
Best & Safest Silicone Brand
Zip Top: Plastic-free, durable alternative to Ziploc bags using 100% LFGB-certified silicone, made in the USA. Its stand-up design makes it space-efficient and perfect for snacking. [Jump to Full Review]
Stoneware: Best Coffee & Other Dry Goods Storage
Stoneware is non-reactive, keeping the flavor and quality of acidic foods like coffee without leaching. It also retains heat well. This makes it great for both storage and baking, such as stoneware bread ovens. Most stoneware containers are dishwasher, oven, and microwave-safe (if the lid is too), making them more versatile than steel.
Unlike clear glass, opaque stoneware needs labels to identify contents. But this slight drawback has benefits—
It blocks all light, which helps prevent oxidation and microbial growth. This quality makes it better than glass at preserving sensitive nutrients, like amino acids, over time. Its hard, non-porous, glazed surface (when undamaged) also prevents bacterial growth better than softer plastics, making stoneware more hygienic.
Drawbacks & Safety Considerations:
- Old, worn, unbranded, or thrifted stoneware can present lead-leaching risks. Look for “lead-free” labels, FDA (good), or Proposition 65 (best) compliance, & ensure the glaze is intact to prevent health risks.
- Must use non-abrasive cleaners to protect the glaze.
- Many options come with plastic lids or melamine-containing bamboo lids. Choose only stoneware or melamine-free wooden lids.
- Less recyclable & often pricier than glass.
Best Uses:
- Mainly for storing dry pantry staples like spices, sugar, coffee & cereal.
- Effective at blocking light to preserve nutrients long term & won’t leach nickel into coffee like stainless can.
- Provides a classic, durable storage option for traditional kitchens.
Best & Safest Stoneware Brand
Le Creuset: Their stoneware canisters are made from lead-free, Prop 65-compliant ceramic with an airtight, silicone-sealed wooden lid, free from melamine. [Jump to Full Review]
Produce Storage (Waxed & Unwaxed): Best Saran Wrap Alternatives
Wax wraps consist of organic cotton infused with beeswax or plant-based waxes. Consider them a non-toxic, eco-friendly alternative to plastic wraps. They’re reusable and mold easily around food with the warmth of your hands, helping keep food fresh.
Wax wraps are great for wrapping produce, covering bowls, or storing items like cheese and bread. Their breathability prevents bacteria and mold, keeping food fresh longer than plastic—especially fine cheeses.
With proper care, they can last over 200 uses and are compostable. Though costing more than plastic initially, their reusability makes them cost-effective over time.
Unwaxed options, like Vejibag, last indefinitely but are only good for produce storage (can’t seal bowls).
Drawbacks & Safety Considerations:
- Not suitable for raw meats or liquids, limiting versatility compared to plastic wraps.
- Some options may contain pesticides; opt for wraps made from organic materials to prevent chemical exposure. Ensure they’re labeled as food-grade & compliant with relevant safety standards, like the FDA.
- They lose clinginess with use, eventually needing replacement. Wash with mild soap, cool water, & then air dry to prolong their lifespan.
Best Uses:
- Wrapping fruits, vegetables, breads & pastries to maintain freshness.
- Sealing bowls or containers without lids.
- Cheese Storage: Helps preserve cheese quality by allowing it to breathe while preventing it from drying out.
Best & Safest Produce Storage Brands
Bee’s Wraps: Made in the USA from organic cotton, beeswax, and plant oils. They preserve food naturally and last up to 12 months. When discarded, they compost naturally into the ground. [Jump to Full Review]
Vejibag: Unwaxed, US-made, 100% organic cotton bags that create a breathable, humid environment to keep produce fresh longer. Machine-washable and indefinitely reusable. [Jump to Full Review]
11 Best Non-Toxic Food Storage Containers: In-Depth Reviews
For each pick below, we verified brand claims and tested performance through leak, drop, temperature, and “old food” tests.
For untested brands, we gathered feedback from long-time users. I also relied on my experience designing, sourcing, and safety-testing silicone and steel drinkware to determine product quality and “non-toxicness.”
We included options for different budgets and needs, like meal prep, leak-proof storage, freezer-to-oven, and microwave use. All picks are dishwasher-safe.
The following brands meet the highest level of safety, quality, and practicality:
Best Non-Toxic Glass Tupperware Picks
1. Urban Green: Best Overall
- Materials: 100% borosilicate glass & FDA-approved food-grade silicone.
- Compatibility: Fridge, freezer, microwave & oven-safe.
- Price Range: $42+ [Check latest prices]
- Main Pro: Seamless alternative to traditional Tupperware shapes & sizes without the plastic.
- Main Con: No divided section containers are available & lids are not 100% leak-proof; they should be kept upright.
Many “non-toxic” glass food storage options still use plastic lids or seals (e.g., Pyrex Simply Store). Urban Green uses silicone instead.
Their containers also differ with a 100% borosilicate glass design. Paired with its silicone-framed glass lids, it offers nearly leak-proof storage with zero plastic. They come in the same handy sizes and shapes as regular options, making them our top non-toxic Tupperware alternative.
Its borosilicate glass design is highly durable, handling daily fridge-to-microwave use more reliably than soda lime. It’s perfect for work lunches. The silicone lid vents allow steam to escape while preventing splatter, too.
Urban Green offers sets from two to six containers in both round and rectangular shapes. If they’re sold out, EcoEvo has similar options.
2. Anyday: Best for Microwave Use & Serving
- Materials: Frosted borosilicate glass body & lid with LFGB-certified platinum silicone seal.
- Compatibility: Freezer, microwave, dishwasher, & *oven-safe (*500℉ bowl, 400℉ lid).
- Price Range: $40+ [Check latest prices]
- Main Pro: Versatile for storing, cooking, & reheating. The steam-circulating design keeps food moist & retains nutrients.
- Main Con: Steam vent knob can leak hot steam, posing a burn risk. Container sizes may appear smaller than expected.
Anyday stands out for its ability to store, cook, and reheat food so well that I’ve gifted sets to several family members.
Their dome-shaped borosilicate bowls and lids have push-button silicone seals that trap and circulate steam, keeping food moist and flavorful. This design also prevents leaks, making it great for travel to parties (with the button pressed). I tested it upside down with beef stew—no spills. Plus, the frosted glass looks sleek for serving.
The 2-pack Starter Set is a solid, affordable choice, but the Everyday set offers more variety.
Beyond making non-toxic, eco-friendly products, Anyday supports social causes like The Lee Initiative and Baby2Baby.
3. Frego: Best for Kids’ Lunches & Snacks
- Materials: Borosilicate glass body & FDA-approved, food-grade silicone lid & container sleeve.
- Compatibility: Freezer, microwave, dishwasher, & oven-safe.
- Price Range: $30+ [Check latest prices]
- Main Pro: Non-toxic design with a silicone sleeve for grip & shock absorption—ideal for kids & on the go.
- Main Con: Silicone sleeves can trap food & make cleaning tedious, though they’re removable.
Frego makes 100% plastic-free borosilicate glass containers. Like those above, it won’t stain or react with food and handles heat better than soda-lime Pyrex. This makes it ideal for more versatile, reliable use.
But what sets Frego apart is its silicone lid and sleeve. This removable sleeve protects the container if dropped, is easier to grip, and is safer to handle when hot. Paired with its double-seal silicone lid for freshness and no leaks, it’s perfect for kids.
These containers work in the freezer, microwave, oven, and dishwasher, making them super convenient.
4. Kilner Jars: Best for Wet Pantry Storage
- Materials: Borosilicate glass & lid with FDA-approved food-grade silicone seal.
- Compatibility: Freezer, microwave, dishwasher, & oven-safe.
- Price Range: $11+ [Check latest prices]
- Main Pro: Non-tinted, lead-free borosilicate glass with a leak-proof seal, ideal for food preservation.
- Main Con: Limited to bulk storage; not ideal for meal prep.
Kilner jars are my top pick for keeping trail mix and fruit cocktails fresh between camping trips. Since 1842, Kilner has been a leader in food preservation and sustainability, thanks to its strong glass, patented vacuum seal, and classic design.
These jars, made from durable, 100% recyclable borosilicate glass, are safe and built to last. Their airtight seal keeps food fresher for longer compared to brands with weaker seals, helping to cut down on waste.
Beyond canning jars, Kilner also makes clip-top oil bottles, spice jars, and hefty 68 oz canisters for bulk storage of vegetables, cereal, or pasta.
Best Non-Toxic Stainless Steel Storage Picks
5. U-Konserve
- Materials: 18/8 stainless steel body & LFGB-certified, platinum-cured silicone lids.
- Compatibility: Fridge, freezer, dishwasher & *oven-safe to 300℉ (*excluding lids).
- Price Range: $10+ [Check latest prices]
- Main Pro: Durable stainless steel with clear, leak-resistant silicone lids—safer than plastic with convenient visibility that’s uncommon in silicone.
- Main Con: Lids can pop off with rough handling, making them less reliable for ultra-wet foods.
U-Konserve elevates stainless steel storage with tough, non-toxic 18/8 stainless steel and LFGB-certified silicone lids.
They’re the only brand with clear silicone lids, making it easy to see what’s inside. This design offers steel’s safety with the visibility of plastic or glass, minus the breakage risks. However, their teal and blue lid options further extend freshness by blocking more light.
Etched tare weights simplify bulk shopping, and container sizes range from 5 to 50 oz. They come in round, rectangular, divided, or nesting styles. U-Konserve also offers 100% silicone containers for microwave use.
Beyond using sustainable materials, U-Konserve is a Certified B-Corp and donates 5% of sales to environmental charities—making it a genuinely eco-conscious choice.
6. Bentgo MicroSteel: Best for Leftovers & Work Lunches
- Materials: Hybrid 18/8 stainless steel & food-grade silicone body with silicone lid.
- Compatibility: Fridge, freezer, dishwasher, microwave & oven-safe (350°F for 1 hour).
- Price Range: $20+ [Check latest prices]
- Main Pro: Durable stainless steel with microwave-safe convenience—ideal for bumpy transport & daily reheating.
- Main Con: Lid isn’t 100% leak-proof, & the single-compartment design isn’t suitable for food separation.
Stainless steel is durable and safe, but it’s not microwave-safe—until now. Bentgo’s MicroSteel containers offer the strength of steel with the practicality of glass. How?
They use a special stainless steel alloy with low copper and silicon. Paired with a food-grade silicone base and rounded edges (prevents sparking), they’re microwave-safe for up to 10 minutes!
Unlike Klean Kanteen’s version, Bentgo’s design has a better lid with a built-in vent for mess-free reheating. A handy corner tab makes it easy to remove, too. It’s perfect for meal prep, work lunches, and travel. The rounded edges and simple lids also make it great for kids.
It comes in four colors and sizes: 2-cup (16 oz) for snacks, 3-cup and 5.5-cup (24–44 oz) for meals, and a jumbo 8.5-cup (68 oz) for family outings. While the containers are single-compartment and the lid isn’t fully leak-proof, Bentgo offers an airtight version with removable divider for wet foods. All ship in simple, plastic-free packaging.
7. EcoLunchBox: Best for Hard-Use & Travel with Wet Foods
- Materials: 18/8 stainless steel body & lid with FDA-approved food-grade silicone lid gasket.
- Compatibility: Fridge, freezer, dishwasher & *oven-safe (silicone lid options with lid removed).
- Price Range: $25+ [Check latest prices]. Also available on EarthHero (carbon-neutral shipping)
- Main Pro: Leak-proof stainless steel with watertight silicone seals, perfect for wet meals on the go.
- Main Con: Some of their containers, like the 3-compartment nesting tiffins, aren’t fully leak-proof.
EcoLunchBox’s Wet Boxes are the top choice for 100% leak-proof, plastic-free storage.
The 40 oz Wet Box is great for soups, saucy meals, and takeout. It has an 18/8 stainless steel body and lid, a removable silicone gasket, and secure side-locking clamps. With adjustable clamp stiffness, you can quickly adapt these for children’s use, too.
Beyond Wet Boxes, EcoLunchBox has more options. The Seal Cup bundle includes six round stainless containers (6 oz to 48 oz) with silicone lids, perfect for snacks, dressings, and dips. They also offer 3-compartment nesting tiffins in rectangular and circular designs. These aren’t fully leak-proof for wet foods but still have locking clamps for added security.
As a Certified B-Corp, EcoLunchBox offsets the CO₂ of 4.7 million pounds of burned coal annually. Plus, all containers ship in plastic-free packaging!
Best Non-Toxic Silicone Food Storage
8. Zip Top: Best Ziploc Alternative
- Materials: 100% LFGB-certified, platinum-cured silicone.
- Compatibility: Freezer, microwave, & dishwasher-safe.
- Price Range: $9+ [Check latest prices]
- Main Pro: Durable, plastic-free alternative to Ziploc bags with a stand-up design for storage & on-the-go snacking.
- Main Con: Mostly leak-proof but not fully airtight.
Zip Top offers a 100% plastic-free replacement for Ziploc bags. Made from LFGB-certified silicone, they won’t leach chemicals.
Unlike brands that use plastic sliders, Zip Top’s one-piece design is tougher. While not fully leak-proof, it generally keeps spills in unless squeezed. For very liquid foods, EcoLunchBox’s Wet Box is a better option.
The stand-up design saves fridge space and works great for snacking on the go. Different shapes fit different needs—narrow, taller “cup” sets fit cup holders, and wider “dish” sets are ideal for home snacking. Or, stick with their standard “bag” option for a true Ziploc alternative. They offer multi-packs from two to eight pieces and six color options.
Lastly, Zip Top is the only brand making their bags in the U.S.! Their recyclable, U.S.-made packaging further shows their commitment to sustainability.
Best Non-Toxic Stoneware Food Storage Pick
9. Le Creuset Stoneware: Best for Long-Term, Dry Pantry Storage
- Materials: Lead-free, Prop 65-compliant stoneware & solid beechwood lid with airtight silicone gasket.
- Compatibility: Microwave, freezer, fridge, dishwasher, *oven & broiler-safe (*without lid) up to 500°F.
- Price Range: $46+ [Check latest prices]
- Main Pro: An airtight solution for non-toxic, long-term storage using lead-free stoneware that blocks all light & preserves dry goods.
- Main Con: Bright-colored exteriors may contain cadmium, so choose plain white for safety. That said, the interiors of all versions are lead & cadmium-free.
Crafted in France, Le Creuset’s stoneware canisters are great for dry foods like sugar, spices, and coffee. Acidic coffee, in particular, can absorb chemicals from plastics or nickel from stainless.
Le Creuset uses some of the safest and highest quality glazes made from non-porous and non-reactive ceramic. Their canisters are 100% lead-free and Prop 65 compliant for safety.
They also block all light, helping light-sensitive foods stay fresh longer than glass. With an airtight, melamine-free wooden lid and silicone gasket, these canisters are the best choice for keeping dry goods fresh.
They offer different sizes, from 23 oz to 48 oz and even 80 oz. There’s also a lead-free enameled steel version to avoid the breakability of ceramic (it’s cheaper, too).
Best Non-Toxic Produce Storage (Waxed & Unwaxed)
10. Bee’s Wraps (Wax Wraps)
- Materials: Organic cotton, beeswax (vegan options use candelilla wax), organic plant oil, & tree resin.
- Compatibility: Fridge & *freezer-safe (*fully wrap the food to prevent freezer burn).
- Price Range: $15+ [Check latest prices]. Also available on EarthHero for carbon-neutral shipping.
- Main Pro: Reusable & eco-friendly alternative to plastic wrap that preserves food more effectively.
- Main Con: Beeswax coating can wear out & leave residue if washed improperly; lifespan may be shorter with frequent use. Not ideal for meats.
Bee’s Wraps are a must-have for non-toxic food storage. They’re a plastic-free alternative to Saran wrap, made in the USA from responsibly sourced materials.
With just your hand’s warmth, they form a breathable seal around food or bowls. This keeps produce and cheeses fresh longer than plastic, which traps moisture and causes mold. They are reusable for up to 12 months with proper care and fully compostable after use. (They also make great fire starters!)
I recommend starting with their assorted 3-pack (large, medium, and small). Then, you can stock up on the size you use most. Bread wraps, DIY roll wraps, and storage bags are also available.
Bee’s Wraps is a certified B-Corp and 1% for the Planet member, taking sustainability and pollution reduction seriously. Plus, you can save up to 1,667 sq. feet of plastic yearly per pack!
11. Vejibag (Unwaxed Produce Bags)
- Materials: 100% organic cotton cloth.
- Compatibility: Fridge & freezer-safe.
- Price Range: $24+ [Check latest prices].
- Main Pro: Sustainable, indefinitely reusable alternative to plastic produce bags that keep produce fresh longer by creating a breathable, humid environment.
- Main Con: Less versatile than wax wraps, only suitable for produce storage & not for sealing bowls or other food.
Vejibag’s “Crisper Bags” are even more sustainable than wax wraps for storing produce. While they can’t seal bowls like wax wraps, these bags last longer and don’t need replacing.
Made in the USA from 100% organic cotton, with no dyes, these bags help vegetables stay fresh twice as long as plastic. They create a breathable, humid environment that keeps veggies from suffocating or rotting, unlike plastic. I found it’s best to damp them before wrapping produce for the best results.
They’re reusable, machine-washable, free from chemicals, and entirely replace single-use plastic produce bags. Available in three sizes.
Though they cost more than Bee’s Wraps, their durability makes them a long-term money-saver. I suggest getting one Vejibag for produce and a wax wrap bundle for things like avocados or bowls of fruit.
Caring for Non-Toxic Food Storage Containers to Ensure Safety
Proper Cleaning, Maintenance, & When to Replace:
Glass Containers: Avoid sudden temperature changes to prevent cracking, especially with soda lime glass. Let them reach room temperature before heating or cooling. Use a vinegar-water solution to remove hard water stains.
- When to Replace: Replace if cracks, chips, or deep scratches appear, especially around the rim. These cracks weaken the structure & increase breakage risk.
Stainless Steel Containers: Avoid steel wool or abrasive cleaners to prevent micro-abrasions. These scratches can make cleaning harder and increase the risk of metal leaching with acidic foods.
- When to Replace: Inspect for deep scratches, rust, or discoloration, which can increase metal leaching. Replace if rust develops or scratches make cleaning difficult.
Silicone Containers: Although most are dishwasher-safe, handwashing with mild soap improves longevity. To remove any odors, soak in a 3% hydrogen peroxide solution overnight or bake clean, dry silicone at 170°F for 20 minutes. Avoid sharp utensils that could puncture the material.
- When to Replace: Discard if it becomes sticky, discolored, cracked, or absorbs odors that won’t come out.
Stoneware Containers: Use non-abrasive scrubbers to protect the glaze. Don’t soak unglazed stoneware, as it absorbs water and weakens over time. Prevent cracks by avoiding sudden temperature changes.
- When to Replace: Check for cracks, chips, or crazing (fine surface cracks). If uncertain about safety, use a lead/cadmium test kit. Replace if damage is visible or if the glaze’s safety is unknown.
Wax Wraps: Hand wash with cool water and mild soap. Air dry thoroughly to prevent mold. If the wrap loses stickiness, sandwich it between two sheets of parchment paper and heat it using an iron or a low-temp oven.
- When to Replace: If wraps lose stickiness, fray, won’t hold shape, or absorb persistent odors, replace or refresh them with melted beeswax.
Frequently Asked Questions
Is Caraway food storage non-toxic?
Yes, with a caveat. Caraway’s food storage containers use non-toxic glass with a PFAS-free ceramic coating. But, while quality ceramic coatings are safe, some contain titanium dioxide, a possible carcinogen. These containers are also expensive and offer no cleaning advantage vs uncoated options. Since food storage doesn’t involve cooking (only reheating), uncoated glass or stainless steel is better. They’re less risky, don’t need babying, and cost less.
Is Rubbermaid non-toxic?
Not exactly. Rubbermaid containers, made from copolyester plastic (Tritan), do not contain BPA or phthalates. However, this plastic can release monomers that disrupt endocrine systems, similar to BPA. Studies show this plastic can also release endocrine-disrupting flame retardants such as triphenyl phosphate (TPP) or phenols when worn.
Is Pyrex glass Tupperware non-toxic?
Modern Pyrex glass containers are generally safe for food storage and non-toxic. They stopped using borosilicate glass to save manufacturing costs, not for safety reasons. However, while their polypropylene lids are among the safest plastics for food use, they can still possibly leach additives when heated. It’s best to avoid microwaving the lids. Vintage Pyrex (pre-1970s) is unsafe for food because it contains up to 100,000 ppm of lead in its external coloring, confirmed by XRF scans.
What is the alternative to borosilicate glass?
Borosilicate glass is becoming rarer due to its higher production cost. Some brands still offer it, but modern alternatives exist. Anchor Hocking’s “Tempered Tough” soda-lime glass is one example. It claims to match borosilicate’s heat resistance while breaking into smaller, less sharp pieces if dropped.
Is it better to store food in glass or stainless steel?
Both glass and stainless steel are non-toxic choices for daily food storage and meal prep. However, glass is better for long-term acidic food storage, as stainless can leach nickel under these conditions.
Is BPA-free plastic really safe?
No. BPA-free plastics often have other chemicals like bisphenol S (BPS) or bisphenol F (BPF). Studies show that these substitutes can have health risks similar to BPA. This is because, like BPA, they also act as endocrine disruptors. As a result, BPA-free labels may be irrelevant.
How do I know if my plastic Tupperware is toxic?
To know if your plastic Tupperware is toxic, check for risky recycling codes: Code #7 often has BPA, #3 may contain phthalates, and #6 has styrene. Also, watch for scratches, stains, or odors, which can allow bacteria buildup or lead to chemical leaching. Avoid reusing single-use plastics (ex., takeout containers).
Which plastic containers are safe for food storage?
While no plastic is entirely safe, some are less risky. Look for safer plastic food containers with recycling codes #1, #2, #4, and #5 (PET, HDPE, LDPE, PP). Regardless, don’t heat or serve food in plastic; avoid old or damaged containers. Ideally, reserve plastics for storing dry, non-acidic, and non-fatty foods or simple fridge storage.
How can I reduce my plastic container use on a budget?
- Assess Your Kitchen: Identify your most frequently used plastic items & prioritize replacing them at a minimum.
- Replace Gradually: Swap out plastic containers as they wear out to reduce waste & manage costs.
- Dispose of Plastic Properly: Check recycling codes (triangle symbol with #) & find local facilities that accept them.
- Repurpose or DIY Alternatives: Reuse glass jars from pasta sauce or pickles, for example, for storage. You can also make DIY beeswax wraps using cotton fabric, beeswax pellets, & jojoba oil. Here’s a good tutorial.
- Buy in Bulk: Bring your own containers to reduce packaging waste, save cost, & avoid the highest-risk (single-use) plastics.
Summary: What to Avoid & The Safest Options
Avoid:
- Plastics: Leach chemicals like additives, BPA, phthalates, stabilizers, & BPS/ BPF (BPA-free plastics). This happens when exposed to heat, acids, or fats. Can disrupt hormones.
- Melamine Risks in “Bamboo” Lids: Releases formaldehyde at high temperatures. Risk of kidney damage. Avoid food storage with bamboo lids for hot foods or liquids unless labeled “melamine-free.”
- Aluminum Risks: Old aluminum cookware & disposable trays leach into food, especially with acidic food or heat. It can give food a tinny, metal-like taste & may cause neurotoxicity. Don’t store food in these items. Even PFAS-free ceramic pans can leach aluminum if scratched.
- Lead & Cadmium Risks: Older ceramics & glass with colored glazes or markings may leach lead or cadmium when exposed to acidic foods & heat. This can harm cognitive function & the kidneys. Avoid vintage or second-hand ceramics. Use modern, tested items that are in good condition.
- PFAS risks: These “forever chemicals” can leach into food from non-stick cookware (even PFOA-free), food packaging, & some containers. Linked to liver damage, developmental effects, & cancer. Don’t store food in any Teflon pot.
Safe Choices:
- Glass (Least-risky Option): Non-toxic glass containers don’t leach chemicals, metals like aluminum, lead, or nickel, or fillers. Borosilicate glass is best for daily reheating & long-term storage. Avoid leaded, decorated, or recycled glass. Urban Green is our top pick.
- 18/8 or 18/10 Stainless Steel: Durable, chemical-free, & non-porous. Ideal for on-the-go meals & outdoor use. Avoid prolonged storage of acidic foods due to potential nickel & chromium leaching. Bentgo MicroSteel is our top pick.
- Platinum-cured, Food-grade Silicone: Heat-resistant, non-toxic, & flexible alternative to plastic. Choose FDA or LFGB-certified, filler-free options – platinum-cured is best for food storage. Zip Top is our top pick.
- Prop 65-compliant Stoneware: Non-reactive, oven-safe, & blocks all light, preserving sensitive nutrients. As a result, it’s ideal for long-term dry goods storage, especially coffee. Look for lead-free, FDA or Prop 65-compliant labels & avoid plastic & bamboo lids. Le Creuset is our top brand pick.
- Organic Produce Storage: Wax wraps (beeswax or plant-based) are a non-toxic, reusable alternative to plastic wraps. They preserve freshness & prevent bacterial growth. Avoid for raw meats & liquids. Opt for organic, food-grade options. Bee’s Wraps are our top waxed brand pick; Vejibag is the best unwaxed option that doesn’t need replacement.
P.S. Now that you’ve got the gist of the best non-toxic Tupperware, it’s time to check your cookware for PFAS and heavy metals. Some so-called “safe” pans aren’t as they seem. Explore our Safe Cookware Guide to avoid the gimmicks!
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