Stanley Quencher H2.0 Flowstate TUMBLER vs Rambler Tumbler YETI: which is safer?
Rambler Tumbler YETI is our pick: better on PFAS and on the overall hazard picture.
Stanley
Stanley Quencher H2.0 Flowstate TUMBLER
PFAS grade
B 80/100
Overall grade
C 72/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Stainless steel body, plastic lid and base
Confidence
72%
PossiblePlastic lid and base off-gassing or leaching
PossibleGasket and seal material degradation
Our pick
Yeti
Rambler Tumbler YETI
PFAS grade
B 80/100
Overall grade
C 76/100
Verdict
Buy
Hazard flags
⚑ 1
Material
18/8 stainless steel, no coating
Confidence
82%
PossibleNickel leaching from stainless steel
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