West Loop 3.0 Stainless Steel Travel Mug with AUTOSEAL Lid vs Rambler Tumbler YETI: which is safer?
Rambler Tumbler YETI is the clear pick. Contigo West Loop 3.0 Stainless Steel Travel Mug with AUTOSEAL Lid carries a failing PFAS grade, and we never recommend buying a failing product.
Contigo
West Loop 3.0 Stainless Steel Travel Mug with AUTOSEAL Lid
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleLid polymer composition and potential PFAS in water-repellent treatments
PossibleSilicone gasket degradation and leaching
PossibleAcetal or polypropylene lid aging and heat degradation
Our pick
Yeti
Rambler Tumbler YETI
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleNickel leaching from stainless steel
Where these two actually differ
- We flag Lid polymer composition and potential PFAS in water-repellent treatments, Silicone gasket degradation and leaching, Acetal or polypropylene lid aging and heat degradation and Bacterial or mold growth in sealed mechanism on the Contigo and not on the Yeti.
- We flag Nickel leaching from stainless steel on the Yeti and not on the Contigo.
- The Contigo is stainless steel, polymer lid where the Yeti is 18/8 stainless steel, no coating, which is most of the difference in these two grades.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More insulated drink tumblers & travel mugs: see the full ranking