Ozark Trail · Insulated Drink Tumblers
Ozark Trail 18 oz Stainless Steel Insulated Tumbler with Handle and Flip-Straw Lid
Lower concern. Stainless steel and silicone are not materials linked to PFAS.
The tumbler is made from stainless steel with a silicone lid gasket, neither a material linked to PFAS. The brand 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 lid gasket
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Ozark Trail 18 oz Stainless Steel is made of, ingredients and materials
This tumbler uses food-grade 18/8 or 18/10 stainless steel as its primary containment surface, which is chemically inert and does not leach metals under normal beverage storage conditions. The silicone lid gasket and flip-straw lid are elastomers chosen for their stability and resistance to degradation from hot or cold liquids. Neither material class typically introduces heavy metals, plasticizers, or volatile organic compounds into beverages.
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 bacterial colonization
Flip-straw lids with silicone gaskets can harbor bacteria and mold in seams if not disassembled and dried after use, particularly in warm climates. No product-specific recalls exist, but this is a known maintenance issue across the category.
Handle attachment structural failure
Silicone or plastic handles can detach or degrade with repeated hot-liquid exposure and thermal cycling. While not a direct toxicological hazard, failure can cause burns; no recall data exists for this specific model.
What’s reassuring
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
Stainless steel corrosion under acidic beverage conditions
18/8 stainless steel is resistant to corrosion from coffee, tea, and citrus juices under normal storage times. No evidence of chromium or nickel leaching into beverages from Ozark Trail tumblers has been documented or reported.
Heavy metals
Food-grade stainless steel (18/8 minimum) does not leach iron, nickel, or chromium into beverages under normal use. Ozark Trail tumblers meet FDA food contact standards by composition, though the brand does not provide third-party certification.
Source, FDA ↗VOC off-gassing from lid or gasket
High-quality silicone gaskets have minimal off-gassing; no odor or chemical smell complaints have surfaced in available product reviews or safety databases for this tumbler line.
The full breakdown
The brand's record and disclosure
Ozark Trail is a Walmart house brand with no published material safety data sheets, third-party certifications, or known product safety recalls specific to this tumbler line. The brand does not publicly disclose formulation details or take formal positions on hazardous substance management. No established safety controversies or litigation involving this product category have been documented.
How it compares in its category
Insulated tumblers made from stainless steel present lower concern compared to aluminum cores, ceramic glazes with lead, or plastic liners containing BPA or antimicrobial coatings, which carry documented leaching risks. Budget brands like Ozark Trail typically match higher-priced competitors (Yeti, Hydro Flask) on material safety, though they may use lower-grade silicone gaskets that wear faster. The flip-straw lid introduces silicone exposure that is minimal but worth monitoring over time.
If you buy it
Hand-wash the lid and gasket regularly to prevent bacterial biofilm growth in seams and prevent silicone degradation from dishwasher heat. Inspect the silicone gasket annually for cracks, discoloration, or odor; replace if visible wear appears. Avoid filling with liquids hotter than 180F (82C) if the lid will remain sealed for extended periods, as thermal stress can degrade silicone. Do not assume the stainless steel core is indestructible; deep dents can weaken insulation and create micro-environments for mold if moisture enters.
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 Insulated Drink Tumblers
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- The brand calls it PFAS-free, which we have not verified
- Powder-coat cap degradation over time
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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
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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.