Compare Food Storage Containers
Which scores higher on safety? R3 breaks it down.
The most important dimensions, side by side.
Borosilicate glass is the gold standard for food storage — chemically inert, thermal shock-resistant, and FDA-approved. It will not leach chemicals into your food at any temperature, and it can handle sudden temperature changes that would crack regular glass.
Tempered soda-lime glass is chemically inert and FDA-approved — no chemicals leach into your food. Slightly more susceptible to thermal shock than borosilicate but perfectly safe for daily use.
Amazon Basics does not disclose the specific plastic type used for the lids. While the lids are marketed as BPA-free, the lack of material transparency is a concern since the lid contacts your food directly. The blue silicone gasket ring is a good sign, but the lid body plastic remains unknown.
Food-grade polypropylene lids are FDA-approved and BPA-free by nature — a solid choice, though not as inert as silicone or glass lid materials.
Both borosilicate glass containers and plastic lids are confirmed BPA-free by Amazon Basics.
Confirmed BPA-free across both the glass containers and polypropylene lids.
Amazon Basics has not published PFAS-free testing for the lid seal. This is typical across most food storage brands in this category.
Glasslock has not published PFAS-free testing for the lid silicone gaskets — a transparency gap but not unusual in 2026.
Oven-safe to 450°F without the lid. Borosilicate glass handles sudden temperature changes better than soda-lime glass, so moving from freezer to oven is less risky.
Oven-safe to 450°F via TEMPERMAX tempering technology — full versatility from fridge to oven.
Four-sided locking clips with a silicone gasket ring provide the best leak protection in this category. You can transport soups, sauces, and liquids with confidence.
The 4-tab locking clip system with integrated silicone gasket is the most leak-resistant design tested by expert reviewers — ideal for transporting soups and liquids.
Glass containers are fully dishwasher safe. Lids can go in the dishwasher but hand washing is recommended for longevity of the silicone gasket.
Both glass containers and polypropylene lids are fully dishwasher safe — no hand-wash components.
Each lid has four locking tabs that must be clipped open and shut individually. This requires two hands and takes longer than snap-on lids — the trade-off for that excellent leak protection.
The 4-tab locking design is very secure but requires snapping all four sides with two hands — slower than press-fit or one-handed snap designs.
Both rectangular and round containers stack neatly with their flat lids, making good use of fridge and cabinet shelf space.
Containers stack with lids on and nest with lids off — though the mixed shapes (round, square, rectangle) are less space-efficient than uniform sets.
Everything you need to make the call - who each one is for, and who should skip it.
Go for it if you...
You want the best glass material available for food storage at a budget-friendly price under $25
You transport food regularly and need the most leak-resistant locking clip seal system
You want borosilicate glass that handles freezer-to-oven temperature changes without cracking
You are comfortable with the BPA-free claim on the lid even though the specific plastic type is not disclosed
You want glass containers with genuinely leakproof lids for transporting lunches and soups
You need an affordable 9-container glass set under $40 for meal prep
You regularly move containers from fridge to oven — these handle 450°F
You prefer everything to go in the dishwasher without exception
The main thing to know
The lid plastic type is not disclosed. Despite having the best container glass material (borosilicate), the unknown lid composition holds this product back from a top safety score. If Amazon Basics disclosed the lid plastic as PP, the overall score would jump significantly.
The polypropylene lids are the weakest link — Glasslock has not disclosed PFAS-free status for the lid gasket material, and the specific plastic formulation beyond "BPA-free" is not detailed.
Skip this if you...
You need full material transparency on all food-contact surfaces including the lid plastic
You want quick one-handed access to containers and find four-tab locking lids frustrating for daily use
You prefer silicone or PP lids with explicitly disclosed material composition
You want to eliminate all plastic from your food storage — the PP lids are direct food-contact surfaces
You need one-handed lid operation — the 4-tab locking system requires two hands
You specifically need PFAS-free verification on lid gaskets
Neither of these quite what you're looking for?
I've reviewed all Food Storage Containers options at every price pointEvery Food Storage Containers in our database is scored using R3's deterministic scoring system - the same inputs always produce the same score. For this comparison, we evaluated Amazon Basics and Glasslock across 3 independent criteria: Safety (94%), Efficacy (6%), Usability (1%). No sponsored rankings. No paid placements.
Straight answers - no sponsored content, no filler.
Both scored close to 5.9/10, so the better choice depends on your priorities. Safety is our top-weighted scoring pillar, followed by efficacy, and usability. Check which pillar matters most to your family and compare those specific scores.
R3 uses a deterministic scoring system - the same inputs always produce the same score. We evaluate each Food Storage Containers across Safety, Efficacy, Usability using independently verified data. No sponsored rankings. No paid placements. Every score is fully reproducible.
Not necessarily. The overall score reflects our weighted rubric, but your priorities may differ. If you care most about safety, compare the safety scores directly. If budget drives your decision, the prices tell a clearer story. The "right" pick is the one that matches what matters most to your family.
Not the right match? Explore these alternatives in the same category.
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Snapware
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Stasher
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