The CAT Gunnison Steel Toe ESD 6" Work Boot is made with an oiled full grain leather upper and a canvas/suede lining. Both the midsole and outsole are made of durable rubber and the whole thing is put together with SuperWelt™ construction. In addition to the steel toe, the Gunnison has been designed to minimize the buildup of static electricity while maintaining high enough resistance to help protect against live electrical circuits. The outsole is also slip resistant.