34 oz. Stainless Mug with Lid Handle vs Stainless Vacuum Insulated Tumbler: which is safer?

These two grade almost identically. Pick on price and preference; neither has a PFAS edge.

Zojirushi

34 oz. Stainless Mug with Lid Handle

PFAS grade

A 95/100

Overall grade

C 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

Why this gradeBuy

Zojirushi

Stainless Vacuum Insulated Tumbler

PFAS grade

A 95/100

Overall grade

C 77/100

Verdict

Buy

Hazard flags

⚑ 3

Material

stainless steel exterior, vacuum insulation, plastic interior liner

Confidence

78%

PossiblePlastic interior liner composition and leaching

ReportedBacterial or mold growth in sealed compartments

PossibleLid gasket degradation and replacement availability

Why this gradeBuy

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