This #11 Black and White Work and Safety Boot is made for jogging, running and walking purposes. The forepart and footbed consists of XRD technology that exhibits excellent shock absorbent properties to minimize fatigue for the feet. Rubber outer sole endures up to 140 degree C and provides great resistance to slips, acids, oil, cuts and abrasion. Upper sole is made from anti-static nylon that prevents friction on the feet while wearing.