Do Stanley insulated drink tumblers have PFAS?
Stanley insulated drink tumblers average 70 out of 100 on PFAS Authority's PFAS and toxin screen across the 6 Stanley insulated drink tumblers graded as of October 2026, below the 71 out of 100 median for the 25 other insulated drink tumblers brands graded alongside it.
Stanley insulated drink tumblers average Good on our four-band scale. 6 of the 6 we graded are worth buying. That is above 26% of the insulated drink tumblers brands we grade.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
What Stanley says and does about PFAS
Stanley 1913 says on its FAQ that FDA accredited third party labs validate its products against requirements including PFOS. That is a claim about one PFAS compound and not a range wide PFAS position, so we found no PFAS policy from Stanley beyond it. Stanley faced lead related class actions, which are not PFAS matters, and we found no PFAS lab test or PFAS lawsuit naming Stanley.
- Brand statementStanley 1913 says third party labs verify its products against strict guidelines including PFOS, a single PFAS compound, and it does not state a range wide PFAS position. Stanley 1913 FAQ (EU site) ↗
Sources checked September 29, 2026. A brand statement is the company’s own claim, which we report but have not verified. Our grades are model-based estimates, not lab tests.
Stanley insulated drink tumblers worth buying Good or better, best-graded first
Stanley
Everyday 16 oz Tumbler
- stainless steel with plastic lid
- Plastic lid polymer degradation and leaching, The polypropylene or similar plastic lid may release trace…
3 hazards checked on this product. See all of them.
Stanley
Quencher Tumbler
- stainless steel body, plastic lid and grip
- Plastic lid and grip off-gassing or leaching, The exact plastic resin and any coatings on the lid are not…
3 hazards checked on this product. See all of them.
Stanley
Dining Stanley X Calia Quencher Tumbler
- stainless steel tumbler with plastic lid
- Plastic lid degradation and leaching, The plastic lid material is not specified in public product…
2 hazards checked on this product. See all of them.
Stanley
H2.0 Flowstate Quencher Tumbler
- Stainless steel body, BPA-free plastic lid and gasket
- Plastic lid and gasket degradation, Repeated dishwasher exposure or contact with hot liquids above 80C (176F)…
5 hazards checked on this product. See all of them.
Stanley
IceFlow Flip Straw Tumbler
- Stainless steel body, plastic lid and straw
- BPA & bisphenols, Modern food-grade plastics used in Stanley tumblers are often BPA-free, but composition is…
4 hazards checked on this product. See all of them.
Stanley
Quick Flip Go Bottle
- Stainless steel body, plastic cap with silicone seals
- Silicone seal degradation, Silicone flip-top seals can harden, crack, or shed small particles after extended…
2 hazards checked on this product. See all of them.
Better insulated drink tumblers from other brands
Graded higher than the Stanley average of 70.
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.
The same question, asked of the other insulated drink tumblers brands
Best average grade first. Stanley averages 70.
See every Stanley product we grade on the Stanley brand page, or the full insulated drink tumblers ranking.