Coleman · Insulated Drink Tumblers
Coleman Brew Insulated Stainless Steel Tumbler
Low risk. Stainless steel tumbler unlikely PFAS source.
Coleman's stainless steel tumbler is bare metal with no known coating or treatment typically containing PFAS. No lab data or brand disclosure exists, but materials suggest minimal risk.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel body, insulated double-wall construction
Lab data
No public lab test
What Coleman Brew Insulated Stainless Steel is made of, ingredients and materials
The Coleman Brew tumbler uses 18/8 food-grade stainless steel for the outer and inner walls, with an insulating vacuum or foam layer between them. Stainless steel is chemically inert at normal use temperatures and does not leach metals into beverages under typical conditions. The lid and any rubber seals are the only non-metal components; these should be checked for degradation over time but pose minimal risk if kept clean and dry.
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.
Rubber gasket and seal degradation
Silicone or elastomer seals in the lid can degrade with heat, UV, and repeated washing, potentially allowing bacterial growth or developing odors. No specific Coleman recalls on this issue, but standard wear item replacement every 12-24 months is prudent.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Stainless steel minor leaching under extreme conditions
18/8 stainless steel is food-safe and does not leach under normal use. Pitting corrosion is extremely unlikely in fresh water or common beverages at room temperature and is not documented as a consumer concern for this product.
Coating or finish chemicals in manufacturing
No reports of off-gassing, coating peeling, or chemical residue from Coleman tumblers. Stainless steel does not require a functional coating to resist corrosion, minimizing this risk relative to enameled cookware.
Lid material or paint concerns
Lids are typically plastic (polypropylene or similar) or painted metal; Coleman does not publicly disclose lid material composition. No established safety alerts or recalls for Coleman drinkware lids exist in public records.
The full breakdown
The brand's record and disclosure
Coleman does not publicly disclose detailed material sourcing or third-party safety testing for this specific tumbler model. The brand has no documented product recalls or safety controversies tied to their drinkware. Coleman is a legacy outdoor/recreational brand with no known involvement in hazardous coating or polymer scandals, though transparency on PFAS use in manufacturing remains absent.
How it compares in its category
Stainless steel tumblers are not a material linked to PFAS leaching, avoiding concerns associated with some ceramics and coatings or the microplastic concerns of some plastics. Coleman's double-wall design is standard in this category and does not introduce unusual chemical risks. Price and durability sit mid-range; glass insulated tumblers offer slightly lower material complexity but are breakage-prone, while some cheaper alternatives use lower-grade steel or epoxy linings.
If you buy it
Hand-wash or use the top rack of a dishwasher to extend seal life and avoid high-temperature stress on gaskets. Avoid extended storage of acidic or heavily chlorinated liquids, which can accelerate minor staining over years. Inspect rubber gaskets annually for cracks or odors; replace if degraded. Keep the lid dry between uses to prevent mold growth in the seal mechanism.
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
- Coleman has made a specific claim
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
16oz Rise Tumbler
- 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.