MATERIAL: Performance mesh increases air flow; Breathable mesh lining helps keep feet cool in warmer environments CLOSURE: 2 points of adjustability for a custom fit COMFORT: Durable dual density cushioning offers trustworthy shock absorption on impact FIT: KEEN Contoured Fit curves with the natural shape of the foot for a more secure fit while allowing room for toes TRACTION: High traction rubber helps give you the sure footing needed on varied trail terrain