Made for constant movement and long hours on your feet, this slip-on work sneaker provides athletic performance, energy-returning comfort, and easy on-off. KEEN.ReGEN Carbon-Fiber Toe Oil- And Slip-Resistant Heat Resistant Outsole EH-Rated Non-Metallic Non-Mutilating FEATURES -Heat-resistant rubber outsole rated up to 572°F/300°C -100% non-metallic construction for easily passing through metal detectors in highly-secured areas -Non-mutilating upper reduces the chance of marking or scratching surfaces -Nylon shank for midfoot support -KEEN.ReGEN lightweight, compression-resisting midsole providing up to 50% energy return with every step -Oil- and slip-resistant non-marking rubber outsole -Electrical hazard (EH) or Electric Shock Resistant (ESR) footwear helps provide a secondary source of protection in case of accidental outsole contact with live electrical circuits -Removable metatomical insole for comfort and support -Mesh liner provides breathability to help keep feet cool in warm environments