Oxo Good Grips Prep and Go Insulated
Lower concern. Stainless steel container unlikely to contain PFAS.
OXO's Prep and Go uses stainless steel with a plastic lid; the metal substrate has low PFAS risk. OXO provides no PFAS disclosure, so the lid material and any seals remain unspecified.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel food container, plastic lid
Lab data
No public lab test
What Oxo Good Grips Prep and Go Insulated is made of, ingredients and materials
The OXO Good Grips Prep and Go uses a stainless steel food container, which is chemically inert and does not leach metals or compounds into food under normal use. The plastic lid is the variable, OXO does not publicly specify the resin type (polypropylene, polystyrene, or other). Stainless steel itself resists corrosion and does not degrade with repeated washing, making it a durable base material for food contact.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
BPA & bisphenols
OXO does not publicly declare the plastic resin type of the lid. Without material specification, BPA or BPS use cannot be ruled out, though most US food-contact lids now use polypropylene or polyester. Contact with hot foods may increase leaching risk if the resin is not heat-stable.
Source, FDA ↗Lid seal degradation and bacterial growth
Insulated containers rely on seals to maintain temperature and hygiene. If the gasket or seal degrades, moisture can accumulate in the insulation layer or food-contact space, supporting mold or bacterial growth. No product-specific failure data is available.
Thermal stress and plastic lid durability
Repeated dishwasher cycles or exposure to boiling water can degrade plastic lids over time, potentially increasing microcracking or gasket failure. Practical lifespan and failure mode are not documented by the manufacturer.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Microplastics
No reports of microplastic shedding from OXO lids in peer-reviewed literature or consumer databases. Stainless steel does not shed; risk is confined to the plastic lid if cracks or severe wear occur.
Source, EPA ↗Stainless steel composition and nickel leaching
Food-grade stainless steel (typically 304 or 316) is passivated and does not leach detectable nickel under normal food-contact conditions. No recalls or test reports indicate leaching from OXO stainless containers.
The full breakdown
The brand's record and disclosure
OXO publishes minimal material or chemical compliance information on this product; the brand does not disclose specific plastic resin, manufacturing certifications, or testing protocols on available labeling or websites. No formal recalls or safety controversies are on record for this product line. OXO does meet FDA food-contact material standards as a condition of sale in the US, but transparency beyond compliance is not documented.
How it compares in its category
Stainless steel food containers are among the lowest-concern options in the insulated lunch-box category; they avoid ceramic-glaze leaching risks and soft-plastic leaching concerns. Glass containers pose breakage risk and weight trade-offs. Plastic-only insulated boxes risk thermal degradation of the food-contact surface. This stainless-steel-with-plastic-lid design is a conventional mid-range choice with no identified chemical advantage or disadvantage over equivalent alternatives.
If you buy it
Hand-wash the plastic lid rather than running it through a dishwasher to reduce thermal stress and extend its lifespan. Do not fill with very hot foods above 60°C (140°F) if the lid is still sealed, as pressure may build. Replace the lid if cracks appear or if plastic becomes cloudy or brittle. Store empty and dry to prevent mold growth in the insulation layer or seals.
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
- OXO has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
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More lunch boxes 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.