Sistema · Lunch Boxes & Food Containers
Sistema Bento Lunch Box 1,65 L
Lower concern; rigid PP lunch box unlikely to contain PFAS.
Sistema's polypropylene bento box is a basic rigid plastic food container. No evidence of Teflon-family coating coatings, water-resistant treatments, or PFAS additives in standard PP formulations.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Polypropylene (PP) plastic container and lid
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Microplastics
Repeated heating, freezing cycles, or mechanical stress (cracks, scratches) can gradually break down PP and release small fragments, though this is a long-term exposure pathway under heavy use rather than a design defect specific to this product.
Source: EPA ↗Bacterial colonization of seams and gaskets
The lid gasket and container seams can harbor moisture and food residue if not cleaned thoroughly, creating conditions for mold or bacterial growth over time. This is a maintenance issue common to all multi-part food containers, not unique to Sistema.
What’s reassuring
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
BPA & bisphenols
Polypropylene does not contain or intentionally release BPA or BPS by formulation. No recalls or test reports document contamination of Sistema lunch boxes with these chemicals.
Source: FDA ↗Phthalates
PP is not plasticized with phthalates; this hazard class is not applicable to rigid polypropylene containers. No evidence of phthalate migration from Sistema PP boxes exists in public records.
Source: ATSDR ↗Coating or adhesive leachables
Sistema lunch boxes do not rely on applied coatings or adhesives in food-contact zones; the plastic itself is the barrier. No third-party testing or complaints documenting leaching from seals or hinges have been published for this model.
The full breakdown
What it's made of and why it matters
This Sistema lunch box is rigid polypropylene (PP), a thermoplastic polymer commonly used in food containers because it resists moisture, has a higher melting point than many plastics (around 130°C), and does not leach BPA or phthalates by design. PP is one of the safest food-contact plastics under normal use; it does not degrade easily at room temperature or in a standard dishwasher, and migration of harmful chemicals into food is minimal when the material remains intact and is not exposed to prolonged high heat or solvents.
The brand's record and disclosure
Sistema, a New Zealand-based manufacturer, has no major public safety recalls specifically tied to this lunch box model or chemical contamination in recent public records. The brand does not make prominent public disclosures about testing protocols, third-party certifications, or chemical standards beyond basic FDA food-contact compliance. No established controversies or litigation involving Sistema food containers have surfaced in widely reported sources, suggesting a low-profile safety history rather than an exemplary one.
How it compares in its category
Polypropylene lunch boxes like this one occupy the mid-tier of food-storage safety: they avoid BPA and phthalates inherent to older plastics and are more durable than thin single-use containers, but lack the inertness of glass or stainless steel alternatives. Sistema containers are broadly comparable to other PP-based lunch boxes from brands like Rubbermaid or Sterilite; no published testing differentiates Sistema as safer or riskier than these peers.
If you buy it
Do not heat food in this container in a microwave or oven; PP begins to soften and may leach trace compounds above 60-70°C. Hand-wash rather than dishwasher-wash if possible to extend coating life and prevent stress cracks that can harbor bacteria. Replace the container if you notice warping, discoloration, or odor retention, which signal material degradation. Store dry; prolonged contact with acidic foods (citrus, vinegar) or fatty oils can slowly accelerate microscopic wear, though risk is low for occasional use.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Sistema has made none
Formulations change between production runs, so check the current label. How we grade.
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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.