Byron 2.0 Stainless Steel Travel Mug Snapseal vs Stainless Mug: which is safer?

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

Contigo

Byron 2.0 Stainless Steel Travel Mug Snapseal

PFAS grade

A 95/100

Overall grade

B 83/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Stainless steel, silicone gasket

Confidence

78%

PossibleSilicone gasket degradation

PossibleThermal stress cracking

PossibleLid seal failure and contamination

Why this gradeBuy

Zojirushi

Stainless Mug

PFAS grade

A 95/100

Overall grade

B 83/100

Verdict

Buy

Hazard flags

⚑ 3

Material

stainless steel, no coating specified

Confidence

82%

PossibleNickel leaching (from stainless steel alloy)

PossibleBacterial growth in trapped water (between walls)

PossibleThermal stress from extreme temperature swings

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 drinkware tumblers: see the full ranking