These Allowance Sport ST Work Sneakers feature: Leather upper, nylon mesh lining, EVA and memory foam removable cushion footbed with EVA heel cup insole, EVA midsole with slip resistant lugged rubber outsole and external TPU shank stabilizer, no exposed metal on upper, steel toe, slip resistant, electrical hazard protection. F2413 safety standards. Built for your job, Knapp boots are trusted by people who work for a living. They are durable and comfortable and come at a great price. Material: Leather, Rubber.