Suede leather upper. Please note that there is no exposed metal on upper. Nylon mesh lining for better breathability. Removable, cushioned EVA footbed insert with sponge rubber heel wedge provides excellent comfort and shock absorption. Lightweight EVA midsole delivers cushioned support. Grip Master rubber outsole with excellent slip, oil, chemical, heat, and abrasion resistance. The outsole is also resistant to metal chips. Steel toe meets ASTM F2413 safety standards, EH (electrical hazard) protection.