Hoka U Kaha 3 GTX TP vs Men Mephisto Curt Mt SNEAKER: which is safer?
Men Mephisto Curt Mt SNEAKER is our pick: better on PFAS and on the overall hazard picture.
Hoka One One
Hoka U Kaha 3 GTX TP
PFAS grade
Bad 20/100
Overall grade
Bad 0/100
Verdict
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Hazard flags
⚑ 5
Material
Textile upper with GTX waterproof membrane, unspecified water-repellent coating treatment
Confidence
35%
LikelyPFAS in water-repellent coating finish
PossibleFormaldehyde resins in textile finishes
PossibleAzo dyes in synthetic fibers
Our pick
Mephisto
Men Mephisto Curt Mt SNEAKER
PFAS grade
Good 65/100
Overall grade
Good 59/100
Verdict
Skip
Hazard flags
⚑ 1
Material
leather, textile, rubber sole
Confidence
55%
PossibleVolatile organic compounds (VOC) off-gassing from adhesives
Where these two actually differ
- We flag PFAS in DWR finish, Formaldehyde resins in textile finishes, Azo dyes in synthetic fibers and Antimony in polyester on the Hoka One One and not on the Mephisto.
- We flag Volatile organic compounds (VOC) off-gassing from adhesives on the Mephisto and not on the Hoka One One.
- The Hoka One One is Textile upper with GTX waterproof membrane, unspecified DWR treatment where the Mephisto is leather, textile, rubber sole, which is most of the difference in these two grades.
- The gap is 45 points, wide enough that this is not a close call, and the Mephisto is the one to buy.
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 waterproof boots: see the full ranking