Ozark Trail · Insulated Drink Tumblers
Ozark Trail 18oz Vacuum-Insulated Stainless Steel Tumbler
Lower concern. Stainless steel interior has no coating on record.
The stainless steel interior is an uncoated material not linked to PFAS. The plastic lid and gaskets were not disclosed as having water-repellent finishes. 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 interior, vacuum insulation, likely plastic lid
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Ozark Trail 18oz Vacuum-Insulated is made of, ingredients and materials
This tumbler uses a double-wall stainless steel construction (304 or 18/8 grade typical for this price point) with a vacuum-sealed air gap for insulation. Stainless steel does not leach metals under normal drinking conditions because the chromium oxide passive layer prevents contact between the steel and liquid. The plastic lid is the only potential concern; most budget tumblers use polypropylene (PP) or polyethylene terephthalate (PET), neither of which contains BPA or phthalates by design, though the lid's coating or adhesives warrant attention.
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.
Plastic lid degradation and leaching
The polypropylene or polyethylene lid may leach trace chemicals if cracked, heated above design limits, or used with acidic beverages (citrus, vinegar). Risk is low under normal cold or warm (not hot) use, but visual inspection before each use is prudent.
Lid adhesive or coating unknown composition
Budget tumblers often use minimal disclosure of adhesives bonding the lid to the gasket or gasket material itself. No testing data is publicly available for this model. Volatile organic compounds (VOCs) from new plastic lids may off-gas slightly on first use; airing out the lid before first use can minimize this.
Bacterial growth in vacuum seal or lid crevices
If hot beverages are stored for many hours, condensation and biofilm can accumulate in the vacuum seal area or under the gasket, particularly if not fully dried after washing. Dishwasher safe lids reduce this risk by ensuring thorough drying.
What’s reassuring
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
Stainless steel surface corrosion
304-grade stainless steel (common in this category) is highly resistant to corrosion in freshwater and most beverages. Chlorine exposure or prolonged saltwater contact could theoretically degrade the passive layer, but this is not a documented issue for typical home use.
Lead
Reputable stainless steel suppliers maintain strict limits on trace metals; no recalls or testing issues are documented for Ozark Trail tumblers. The risk is negligible for food-grade stainless steel, but the brand offers no certification to verify this.
Source, ATSDR ↗The full breakdown
The brand's record and disclosure
Ozark Trail is a Walmart house brand with no published material disclosures, third-party certifications, or documented sustainability commitments. The brand has no known safety recalls for this specific tumbler model. No independent testing or formal PFAS stance exists in public records. Transparency is minimal across their product line, which is typical for budget outdoor gear but limits verification of material sourcing.
How it compares in its category
Vacuum-insulated stainless steel tumblers at this price point (typically under $15) have lower concern for some chemical leaching risks because the interior contact surface is inert metal, not coated plastic or ceramic. Premium brands like Hydro Flask or Yeti offer better exterior coatings and lids, but the core safety profile is nearly identical. Cheaper silicone or plastic tumblers carry higher leaching and degradation risks; this design avoids those.
If you buy it
Hand wash the lid separately to inspect for cracks or discoloration, and replace it if degraded. Avoid prolonged exposure to boiling liquid (the lid is the temperature limit, typically 140-160F for most PP lids). Do not microwave. The vacuum seal may weaken after several years of heavy use, but the stainless steel core is not a material linked to PFAS. Check the lid's edges for gaps that could trap bacteria if used for hot beverages for extended periods.
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.
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- 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.
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- The brand calls it PFAS-free, which we have not verified
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- 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.