This #6 Black Safety Executive Boot is designed to use in offices and work sites. Premium leather construction offers added durability and water resistance. The heel strike zone consists of XRD technology that exhibits excellent shock absorbent properties to minimize fatigue for the feet. Outer sole endures up to 140 degree C and provides great resistance to slips, acids, oil, cuts and abrasion. Smartlite TPU sole consists of rubber inserts that provides great grip and water resistance.