Men's Moab 3 Waterproof vs Men's Killington Trekker Sneaker Boots: which is safer?
Merrell Men's Moab 3 Waterproof is our pick: better on PFAS and on the overall hazard picture.
Our pick
Merrell
Men's Moab 3 Waterproof
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleWaterproof coating composition (unspecified)
PossibleAdhesives and glue off-gassing
ReportedCoating degradation and microplastic release
Timberland
Men's Killington Trekker Sneaker Boots
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
LikelyTeflon-type coating and fluorocarbon microparticle shedding
PossibleFormaldehyde resins in leather tanning and finishing
PossibleAzo dye residues in nubuck finish
Where these two actually differ
- We flag Waterproof coating composition (unspecified), Adhesives and glue off-gassing and Coating degradation and microplastic release on the Merrell and not on the Timberland.
- We flag PTFE and fluorocarbon microparticle shedding, Formaldehyde resins in leather tanning and finishing, Azo dye residues in nubuck finish and Adhesive and glue volatiles at seams on the Timberland and not on the Merrell.
- The Merrell is Nubuck leather upper, proprietary waterproof lining where the Timberland is Leather, nubuck, rubber sole with waterproof treatment, 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 hiking shoes & trail runners: see the full ranking