Bento Box Co · Food Storage Containers
Storage Lunch Box
Skip until brand discloses material composition and PFAS status.
Bento Box Co does not disclose material composition or PFAS status for this lunch box. Typical food-storage plastics may or may not contain PFAS depending on supplier and treatment. Without third-party testing, lab data, or a clear brand statement, PFAS risk cannot be assessed reliably. Request transparency from the brand before purchase.
Shop Bento Box Co on Amazon →Material
Plastic (presumed polypropylene or polyethylene)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Bento Box Co storage containers are presumed polypropylene (PP) or polyethylene (PE) based on typical lunch box manufacturing, though the brand has not publicly disclosed exact resin type or additives. Polypropylene is generally considered food-safe at temperatures below 110°C but can leach plasticizers or slip agents if stressed or heated repeatedly. Without confirmation of whether this product contains BPA, BPS, phthalates, or other processing aids, the exact safety profile remains incomplete.
The brand's record and disclosure
Bento Box Co maintains silence on material composition and PFAS status, which is a significant transparency gap in an era when many food-storage manufacturers voluntarily publish safety data. No published certifications (FDA, NSF, or independent testing) or known recalls specific to this product line are on record. This opacity makes it impossible to confirm whether the product meets voluntary industry safety standards or contains legacy additives.
How it compares in its category
Most mainstream food storage brands (Rubbermaid, Pyrex, OXO, Sistema) now publish material certifications and often confirm BPA-free status; Bento Box Co's silence puts it below category norm for transparency. Polypropylene lunch boxes are generally safer than older polycarbonate designs but still require scrutiny if microwaved frequently. Comparably priced stainless steel or borosilicate glass alternatives eliminate the polymer leaching risk entirely.
If you buy it
Limit to cold or room-temperature food storage; do not microwave or place in dishwasher without manufacturer confirmation of heat tolerance. Inspect regularly for stress cracks, discoloration, or odor changes, which indicate degradation and potential leaching. Replace if cracks develop or after 2-3 years of regular use. Before purchase, request the brand's material safety data sheet (SDS) and PFAS declaration directly; silence is not reassurance.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
BPA / BPS / Phthalates in plastics
Polypropylene lunch boxes typically do not contain BPA, but secondary plasticizers and slip agents used in manufacturing are not publicly disclosed by Bento Box Co. Repeated heating or stress can increase leaching risk.
Microplastics when heated
If this product is microwaved despite not being rated microwave-safe, polymer degradation can release microplastic particles into food. Brand has not specified safe reheating temperatures or microwave compatibility.
Coating degradation over time
Polypropylene containers often include wear-resistant surface treatments; without disclosure of these additives, long-term safety during dishwashing or abrasive handling is uncertain.
PFAS contamination (separate assessment)
Brand silence on PFAS status is the primary concern. Polypropylene is sometimes treated with PFAS-based grease repellents; Bento Box Co's 70/100 PFAS grade reflects this unresolved gap.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 45% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Food Storage Containers
Caraway
Food Storage Set
Glass containers with plastic lids
Lower concern; glass + plastic lids with stated PFAS-free position, but no third-party verification of lid material.
⚠Risky category by default
Caraway
Home 9-Piece Mini Food Storage Set
Borosilicate glass containers with plastic lids
Lower-concern option; glass containers avoid PFAS coatings, but verify lid material before purchase.
⚠Risky category by default
Caraway
Cream 6.6-Cup Non-Stick Glass Food Storage Container with Lid
borosilicate glass with non-PFAS lid
Lower PFAS concern, glass container with stated non-PFAS lid, though third-party verification absent.
⚠Risky category by default
More food storage containers grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.