Ahnu Men's Mount Tam Waterproof Oxford 100% Leather/Mesh/Synthetic Imported Rubber sole Waterproof leather and mesh upper Double density compression molded ethylene vinyl acetate with medial and lateral stability postings and shock dispersal plate in forefoot 45 millimetre cross directional lugs with non marking rubber outsole Ahnu's waterproof membrane to keep feet dry Integrated thermo polyurethane shank for torsional rigidity and arch support