Autoseal West Loop Stainless Steel Travel Mug vs Rambler Tumbler YETI: which is safer?
Rambler Tumbler YETI is our pick: better on PFAS and on the overall hazard picture.
Contigo
Autoseal West Loop Stainless Steel Travel Mug
PFAS grade
Excellent 75/100
Overall grade
Good 71/100
Verdict
Buy
Hazard flags
⚑ 1
Material
stainless steel body, silicone gasket/lid seal
Confidence
78%
PossibleSilicone gasket degradation and bacterial/mold colonization
Our pick
Yeti
Rambler Tumbler YETI
PFAS grade
Excellent 80/100
Overall grade
Excellent 76/100
Verdict
Buy
Hazard flags
⚑ 1
Material
18/8 stainless steel, no coating
Confidence
82%
PossibleNickel leaching from stainless steel
Where these two actually differ
- We flag Silicone gasket degradation and bacterial/mold colonization 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 body, silicone gasket/lid seal where the Yeti is 18/8 stainless steel, no coating, which is most of the difference in these two grades.
- These two are 5 points apart, close enough that price and fit should decide it rather than our grade.
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