Ozark Trail 40 oz Stainless Steel Lunch Box
Stainless steel lunch box with no coating on record presents lower concern.
The product has a stainless steel body and uncoated interior with no surface treatment on record. The brand has no PFAS statement on record. Stainless steel is not a material linked to PFAS.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel body, uncoated interior
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Ozark Trail 40 oz Stainless Steel Lunch is made of, ingredients and materials
This Ozark Trail lunch box uses 18/8 stainless steel (304-grade alloy, 18% chromium, 8% nickel) for the body and an uncoated interior. Uncoated stainless steel is chemically inert at normal food-storage temperatures and does not leach metals into food under typical use. The absence of a polymer lining or epoxy coating eliminates the risk of BPA, BPS, or other plasticizer migration that plagues many food-contact containers. Stainless steel's passive oxide layer protects against corrosion and leaching, making it one of the most stable long-term food-contact materials available.
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.
Nickel leaching (from 304 stainless steel alloy)
18/8 stainless contains 8% nickel. In theory, prolonged contact with acidic or salty foods could trigger trace nickel migration, particularly if the passive oxide layer is scratched or damaged. Individuals with nickel sensitivity should monitor for contact dermatitis. No recalls or documented cases specific to this product have been reported.
Gasket and seal leaching (polymer components)
The lunch box likely uses silicone or rubber gaskets around the lid seal. These polymers can release small amounts of oligomers or plasticizers, particularly if stored with hot food or in direct sunlight. The interior stainless steel has no hazard of this kind on record, but gasket degradation over 2-3 years of use is common and could introduce off-flavors or trace compounds into food.
Bacterial growth in seams and crevices
Uncoated stainless steel surfaces are smooth and easy to clean, but the junction between the body and bottom, and around the gasket channel, can trap food particles if not thoroughly dried after washing. Poor maintenance increases risk of pathogenic bacterial colonization rather than chemical leaching.
What’s reassuring
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
BPA & bisphenols
No public disclosures or test results confirm the composition of the lid components or gaskets used in this model. However, mid-range food-contact products often use lower-cost polymers; if sensitive, request material specifications from the manufacturer or test independently.
Source, FDA ↗Lead
The uncoated stainless steel interior eliminates enamel, glaze, or ceramic-coating risks. If the exterior includes any paint, inks, or decorative coatings, those are not typically food-contact surfaces and pose negligible ingestion risk, though dust from peeling paint should be avoided.
Source, ATSDR ↗The full breakdown
The brand's record and disclosure
Simple Modern (parent company Emerson Radio Holding) does not publish detailed safety certifications or material disclosures for this product line. No third-party testing reports, California Proposition 65 warnings, or product recalls specific to leaching or contamination have been identified for this model. The brand has not issued public statements on PFAS, heavy metals, or food-contact safety protocols, leaving material sourcing and QA processes opaque. This silence does not indicate a problem, but reflects limited transparency relative to premium alternatives in the insulated lunch-box market.
How it compares in its category
Stainless steel lunch boxes have lower PFAS concern compared to many coated food-storage containers, similar to glass and ceramic alternatives. Most competing products use plastic liners, silicone gaskets, or epoxy-coated interiors, each introducing polymer leaching risks absent here. This Ozark Trail model is priced significantly lower than equivalent insulated stainless steel boxes from brands like Hydro Flask or S'well, making it accessible without sacrificing core material safety. The trade-off is durability and insulation performance, not food-contact safety.
If you buy it
Hand-wash rather than machine-wash to protect gaskets and seals; stainless steel bodies tolerate dishwashers, but polymer components may degrade. Avoid prolonged storage of highly acidic foods (vinegar, citrus, fermented items) for weeks at a time, as even inert stainless steel can show minor pitting under extreme conditions. Inspect gaskets and the interior for corrosion, pitting, or discoloration annually; replace the unit if the stainless surface shows deep pitting that could harbor bacteria. Do not use for hot liquids above 65°C without testing temperature on skin first, as the lack of insulation means the exterior will be hot.
What we don’t know
- Basis
- Model estimate, 78% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Ozark Trail has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Lunch Boxes
Klean Kanteen
Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid
- Stainless steel body, silicone gasket lid seal
- The brand calls it PFAS-free, which we have not verified
- Silicone gasket degradation
3 hazards checked on this product. See all of them.
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.