Autoseal West Loop Stainless Steel Travel Mug vs Elevation 20 Tumbler: which is safer?

OtterBox Elevation 20 Tumbler edges it on pure PFAS risk, but Contigo Autoseal West Loop Stainless Steel Travel Mug wins overall once other hazards are counted.

Our pick

Contigo

Autoseal West Loop Stainless Steel Travel Mug

PFAS grade

C 75/100

Overall grade

C 71/100

Verdict

Buy

Hazard flags

⚑ 1

Material

stainless steel body, silicone gasket/lid seal

Confidence

78%

PossibleSilicone gasket degradation and bacterial/mold colonization

Why this gradeBuy

OtterBox

Elevation 20 Tumbler

PFAS grade

B 80/100

Overall grade

D 68/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Stainless steel tumbler with powder coat or polyester exterior

Confidence

75%

PossiblePowder coat or polyester exterior degradation

PossibleStainless steel leaching (nickel)

PossibleMold and bacterial growth in seals

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 & travel mugs: see the full ranking