Men's Terrex Skychaser AX5 GORE-TEX Mid Hiking Shoes vs TX5 GTX Men's: which is safer?
La Sportiva TX5 GTX Men's is our pick: better on PFAS and on the overall hazard picture.
Adidas
Men's Terrex Skychaser AX5 GORE-TEX Mid Hiking Shoes
PFAS grade
Bad 20/100
Overall grade
Bad 0/100
Verdict
Skip
Hazard flags
⚑ 2
Material
GORE-TEX membrane (Teflon-family coating-based waterproof layer)
Confidence
45%
PossibleFormaldehyde-release resins in adhesives and coatings
LikelyVolatile organic compounds (VOCs) from foam and synthetic materials
Our pick
La Sportiva
TX5 GTX Men's
PFAS grade
Bad 20/100
Overall grade
Bad 8/100
Verdict
Skip
Hazard flags
⚑ 3
Material
synthetic textile with Gore-Tex membrane waterproof layer
Confidence
45%
PossibleAzo dyes
PossibleFormaldehyde-releasing resins in finishing
PossibleAntimony in polyester
Where these two actually differ
- We flag Formaldehyde-release resins in adhesives and coatings and Volatile organic compounds (VOCs) from foam and synthetic materials on the Adidas and not on the La Sportiva.
- We flag Azo dyes, Formaldehyde-releasing resins in finishing and Antimony in polyester on the La Sportiva and not on the Adidas.
- The Adidas is GORE-TEX membrane (fluoropolymer-based waterproof layer) where the La Sportiva is synthetic textile with Gore-Tex membrane waterproof layer, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
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