Stanley · Insulated Travel Mugs
Stanley Quencher H2.0 Fluted Tumbler
Bare stainless steel tumbler, no known PFAS-risk coatings.
Stainless steel tumbler without documented nonstick or water-resistant coating. Bare metal needs no PFAS disclosure or treatment.
The better-graded swap
Thermos
Thermos Stainless Steel Mug
80/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
stainless steel, no known coating
Lab data
No public lab test
What Stanley Quencher H2.0 Fluted Tumbler is made of, ingredients and materials
The Stanley Quencher H2.0 is constructed from food-grade stainless steel (typically 18/8 or similar austenitic alloys) with no ceramic, enamel, or polymer coatings. Bare stainless steel does not leach lead, cadmium, or aluminum into beverages under normal use. The "fluted" design refers to the exterior ridged pattern, which is part of the steel itself, not an applied coating that can degrade.
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.
Bacterial or mold growth in seals and crevices
The lid gasket and the junction between the tumbler body and base can retain moisture and harbor mold if not dried thoroughly after washing. This is a maintenance issue, not a manufacturing defect, and is common to all reusable drinkware with seals.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Coating degradation and leaching
No coating is present on this tumbler. The fluted pattern is integral to the stainless steel body, eliminating risk of enamel, ceramic, or polymer shedding.
Aluminum leaching
This tumbler is stainless steel, not aluminum. No aluminum-based core or exterior is involved in this product design.
Teflon-type coating fume inhalation (non-stick coating)
No non-stick or Teflon-type coating is used on the Stanley Quencher. The surface is bare stainless steel.
Lead
Stainless steel construction precludes ceramic or enamel coatings. No glaze-based hazard pathway exists for this product.
Source, ATSDR ↗The full breakdown
The brand's record and disclosure
Stanley has a long history in food-contact stainless steel goods and maintains FDA compliance for their drinkware line. The company has not published detailed PFAS statements for this product category. No recalls or widespread safety controversies specific to the Quencher H2.0 tumbler are on record. Material sourcing and manufacturing specifics are not publicly detailed beyond standard food-contact claims.
How it compares in its category
Among reusable tumblers, bare stainless steel avoids hazards present in coated alternatives (non-stick degradation, ceramic glaze contaminants) and ceramic vessels (glaze leaching risk). It sits in the lower-hazard tier of the drinkware category. Cost and performance are comparable to competitors like Hydro Flask and YETI, though Stanley's entry-level positioning reflects simpler manufacturing that reduces process contamination risk.
If you buy it
Wash by hand or dishwasher without concern for coating damage. Do not microwave (metal hazard). Stainless steel does not degrade meaningfully from hot or cold liquids at normal temperatures. Replace only if the vessel dents severely or the seal fails; the steel itself does not deteriorate. Inspect the lid gasket periodically for mold or biofilm, especially if stored damp.
What we don’t know
- Basis
- Model estimate, 82% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Stanley has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Insulated Travel Mugs
Owala
FreeSip Sway Stainless Steel
- Stainless steel body, no interior coating disclosed
- Silicone and plastic lid/valve leachables
3 hazards checked on this product. See all of them.
Owala
Stainless Steel Straw Tumbler Route 66
- Stainless steel tumbler, bare uncoated
- Coating degradation and microplastic shedding from exterior print
3 hazards checked on this product. See all of them.
Thermos
18 oz. Icon Vacuum Insulated Stainless Steel Mug
- stainless steel exterior, vacuum insulation, stainless steel interior
- We found no PFAS statement from the brand
- Nickel leaching from stainless steel
3 hazards checked on this product. See all of them.
More insulated travel mugs 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.