Wmns Hoka One Sky Kaha GTX GoreTex WATERPROOF sz Hiking Boot Trail Running 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
Wmns Hoka One Sky Kaha GTX GoreTex WATERPROOF sz Hiking Boot Trail Running
PFAS grade
Bad 20/100
Overall grade
Bad 6/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Gore-Tex membrane with textile upper and waterproof treatment
Confidence
35%
ReportedPFAS in Gore-Tex membrane and water-repellent coating finishes
PossibleMembrane delamination and coating degradation over time
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 Gore-Tex membrane and DWR finishes and Membrane delamination and coating degradation over time 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 Gore-Tex membrane with textile upper and waterproof 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