Men Mephisto Curt Mt SNEAKER vs Men's SFB B2: which is safer?
Men Mephisto Curt Mt SNEAKER is our pick, better on PFAS and on the overall hazard picture.
Our pick
Mephisto
Men Mephisto Curt Mt SNEAKER
PFAS grade
Good 65/100
Overall grade
Good 59/100
Verdict
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Hazard flags
⚑ 1
Material
leather, textile, rubber sole
Confidence
55%
PossibleVolatile organic compounds (VOC) off-gassing from adhesives
Nike
Men's SFB B2
PFAS grade
Bad 20/100
Overall grade
Bad 0/100
Verdict
Skip
Hazard flags
⚑ 4
Material
Canvas, leather, rubber sole with water-repellent coating treatment
Confidence
35%
LikelyPFAS in water-repellent coating treatment
PossibleFormaldehyde resins in finishes
PossibleAzo dyes in leather or canvas
Where these two actually differ
- We flag Volatile organic compounds (VOC) off-gassing from adhesives on the Mephisto and not on the Nike.
- We flag PFAS in DWR treatment, Formaldehyde resins in finishes, Azo dyes in leather or canvas and Coating degradation and leaching on the Nike and not on the Mephisto.
- The Mephisto is leather, textile, rubber sole where the Nike is Canvas, leather, rubber sole with DWR treatment, 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, which covers 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