Diamondback Work Boots, 13, Leather Upper. Goodyear welt construction stitched soles provide maximum strength and durability. Rubber outsole provides great oil and slip resistance. Inside lining composed of light and soft fabric for added comfort. Wide width allows for extra foot room. Contoured fiber footbed with steel shank insert for shock absorption and comfortable support. Padded leather tongue and collar for great comfort. Steel toe for ultimate protection.