Ozark Trail · Insulated Drink Tumblers
Ozark Trail Insulated Stainless Steel Travel Tumbler with Handle and Flip Straw Lid
Lower concern. Stainless steel body has no coating on record.
The tumbler body is stainless steel with no surface coating on record. The silicone gasket and plastic lid materials are not linked to PFAS in the scientific literature. Ozark Trail has no PFAS statement on record for this product.
We flunk more products than we pass. This one earned its grade. How we grade
Material
stainless steel with silicone gasket and plastic lid
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Ozark Trail Insulated Stainless Steel is made of, ingredients and materials
The tumbler's primary contact surface is stainless steel, which is chemically inert and does not leach metals like lead or cadmium into beverages under normal use. The lid and flip straw are plastic (likely polypropylene or acrylic), and the gasket is silicone rubber. Stainless steel tumblers are associated with lower concern for degradation or substance release when in contact with food or drink, even when warm, as the steel itself is not a material linked to PFAS.
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Silicone gasket degradation and microparticle shedding
Silicone gaskets can degrade over time with repeated thermal cycling and exposure to oils or acidic foods. No recalls or reports exist for this specific model, but regular inspection and replacement (every 1-2 years of heavy use) is prudent.
Bacterial growth in lid and straw assembly
The flip straw and hinged lid create crevices where moisture and residue can accumulate if not cleaned thoroughly. Regular disassembly and air-drying of all components is necessary to prevent mold or bacterial biofilm.
What’s reassuring
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
BPA & bisphenols
Ozark Trail does not disclose resin type or BPA status. Standard food-grade plastics used in beverage lids (typically polypropylene) are considered low-risk, but without explicit certification, assume no additional safety guarantees beyond baseline regulatory compliance.
Source, FDA ↗Stainless steel corrosion and leaching under extreme conditions
Food-grade stainless steel (typically 304 or 316) is highly resistant to corrosion under normal beverage storage. However, prolonged exposure to high chloride salt content (e.g., ocean water or heavily salted solutions) could theoretically increase nickel leaching, though this is not a typical use case.
The full breakdown
The brand's record and disclosure
Ozark Trail is a Walmart house brand with no known public safety incidents or recalls specific to this tumbler model. The brand does not publish materials transparency reports or third-party safety certifications. No established controversies regarding heavy metal contamination, coating degradation, or chemical disclosure exist in public records for this product line.
How it compares in its category
Stainless steel tumblers present lower concern compared to ceramic-coated or aluminum-only alternatives because they reduce potential issues associated with glaze leaching or bare aluminum exposure. This model sits in the mid-market segment; higher-end brands may offer additional certifications (e.g., BPA-free verification), but the baseline material choice here is sound. The silicone gasket and plastic lid are standard across comparable price-point products and pose minimal risk if kept clean and replaced if visibly degraded.
If you buy it
Wash the lid, straw, and gasket by hand or in the dishwasher before first use to remove any residual manufacturing dust. Replace the silicone gasket if it becomes cracked, discolored, or develops persistent odor, as degraded rubber may shed microparticles. Avoid prolonged contact with acidic beverages (lemon juice, vinegar) stored at high temperatures, as this can slightly accelerate silicone wear. Do not exceed the manufacturer's recommended temperature limits for the plastic lid to prevent warping or potential plastic leaching.
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
- Ozark Trail has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Insulated Drink Tumblers
Klean Kanteen
20oz TKWide with Café Cap, Tofu
- Stainless steel bottle, stainless steel cap
- The brand calls it PFAS-free, which we have not verified
- Powder-coat cap degradation over time
3 hazards checked on this product. See all of them.
Klean Kanteen
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- Stainless steel body, powder-coat finish
- The brand calls it PFAS-free, which we have not verified
- Powder-coat finish degradation
3 hazards checked on this product. See all of them.
Klean Kanteen
Insulated TKWide Cap
- Stainless steel bottle, plastic cap and silicone gasket
- The brand calls it PFAS-free, which we have not verified
- Silicone gasket degradation and leaching
3 hazards checked on this product. See all of them.
More insulated drink tumblers 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.