Men's SFB 6" Leather Boot vs Men's SFB Air Field Ukiah R GTX: which is safer?
Nike Men's SFB Air Field Ukiah R GTX is our pick: better on PFAS and on the overall hazard picture.
Nike
Men's SFB 6" Leather Boot
PFAS grade
F 20/100
Overall grade
F 0/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Leather upper with waterproof/water-resistant treatment
Confidence
45%
LikelyPFAS in water-resistant coating
PossibleCoating degradation and microparticle shedding
Our pick
Nike
Men's SFB Air Field Ukiah R GTX
PFAS grade
F 20/100
Overall grade
F 12/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Textile upper with GTX waterproof membrane
Confidence
45%
PossibleFluorochemicals in GTX waterproof membrane
PossibleCoating degradation releasing particles
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 →
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