These hard-wearing Rocky AlphaForce Waterproof Duty Black Boots are made with black full-grain leather and 1000-denier nylon fabric. Rocky AlphaForce boots are great EMT of occupational boots for tough work boot job needs. These lightweight, strong fabrics hold up even in the most extreme working conditions. These duty boots have been built with Rocky Waterproof construction; this creates a barrier that is guaranteed to keep water out, so your feet will remain completely dry.