34 oz. Stainless Mug with Lid Handle vs Stainless Steel Carry Tumbler: which is safer?
Zojirushi Stainless Steel Carry Tumbler is our pick: better on PFAS and on the overall hazard picture.
Zojirushi
34 oz. Stainless Mug with Lid Handle
PFAS grade
Excellent 95/100
Overall grade
Excellent 77/100
Verdict
Buy
Hazard flags
⚑ 3
Material
stainless steel with silicone lid gasket
Confidence
85%
PossibleSilicone gasket degradation and off-gassing
ReportedMicrobial growth (mold, bacteria) in gasket seams
PossibleLid latch or handle durability
Our pick
Zojirushi
Stainless Steel Carry Tumbler
PFAS grade
Excellent 95/100
Overall grade
Excellent 91/100
Verdict
Buy
Hazard flags
⚑ 1
Material
Stainless steel body, no nonstick or special coating mentioned
Confidence
88%
PossibleSeal and gasket degradation
Where these two actually differ
- We flag Silicone gasket degradation and off-gassing, Microbial growth (mold, bacteria) in gasket seams and Lid latch or handle durability on the Zojirushi and not on the Zojirushi.
- We flag Seal and gasket degradation on the Zojirushi and not on the Zojirushi.
- The Zojirushi is stainless steel with silicone lid gasket where the Zojirushi is Stainless steel body, no nonstick or special coating mentioned, which is most of the difference in these two grades.
- These two are level, 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: see the full ranking