High abrasion and moisture wicking mesh lining is dependable long-lasting comfort. Full gusset leather tongue keeps feet dry and comfortable. Supporting steel shank is solid stable work platform. Molded waterproof TPU shell is dry comfort. Removable polyurethane Comfort Core® Air Flow orthotic insert won't compress,foot cushioning,shock absorbing,cooling.SPR™ leather shaft.Lightweight,cushioning,compression molded EVA midsole.Long-wearing "Weave" outsole.Additional InfoOutdoor,Mesh,TPUDefinitionsMidsole,Outsole,Polyurethane,EVA,Leather,Shaft,Tongue