Mug Pink vs Stainless Steel King Travel Mug: which is safer?
THERMOS Stainless Steel King Travel Mug is our pick: better on PFAS and on the overall hazard picture.
S'well
Mug Pink
PFAS grade
Excellent 85/100
Overall grade
Good 73/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Stainless steel double-wall vacuum insulated
Confidence
78%
PossibleNickel leaching from stainless steel
PossibleVacuum seal degradation
PossibleLid or seal material hazards
Our pick
Thermos
Stainless Steel King Travel Mug
PFAS grade
Excellent 95/100
Overall grade
Excellent 83/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Stainless steel interior and exterior, plastic lid
Confidence
82%
PossiblePlastic lid polymer degradation
PossibleGasket/seal material composition
PossibleThermal shock stress on seals
Where these two actually differ
- We flag Nickel leaching from stainless steel, Vacuum seal degradation and Lid or seal material hazards on the S'well and not on the Thermos.
- We flag Plastic lid polymer degradation, Gasket/seal material composition and Thermal shock stress on seals on the Thermos and not on the S'well.
- The S'well is Stainless steel double-wall vacuum insulated where the Thermos is Stainless steel interior and exterior, plastic lid, 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 travel mugs: see the full ranking