4mm multi directional lugs KEEN.Dry waterproof breathable membrane Torsion stability ESS shank Waterproof nubuck leather upper Non-marking rubber outsole Dual density compression molded EVA midsole Removable metatomical dual density EVA footbed KEEN.Dry A proprietary waterproof, breathable membrane that lets vapor out without letting water in. Metatomical Footbed Design This internal support mechanism is anatomically engineered to provide excellent arch support and cradle the natural contours of the foot. Best Use:   Hiking Upper:   Leather Midsole:   EVA Footbed:   EVA Outsole:   Rubber