100% Leather Imported Rubber sole 10 mm drop: due to variances created during the development and manufacturing processes, all references to 10 mm drop are approximate EVA (Ethyl Vinyl Acetate) footbed/heel pocket Forefoot flex grooves help your foot move more freely and naturally IMEVA (injection-molded EVA foam) midsole for firm yet flexible cushioning Internal midsole shank adds midfoot structure and support