Thorogood® Men's Crosstrex Series combines the performance features you need in a work boot with the comfort of an athletic-style hiker. Tackle long shifts and tough jobs with long-lasting cement construction and rugged Crosstrex 360 outsoles for superior grip. These static dissipative (SD) boots are designed for technical work environments like computer chip manufacturing plants – when in contact with properly grounded floors, Crosstrex can safely discharge static build-up. Plus, non-metallic parts provide additional peace of mind when working around any live voltage. Leather and Mesh upper Composite Safety Toe Composite shank Static Dissipative (SD) footwear will provide for a resistance of between 10 to the 6th power ohms (1megohm) and 10 to the 8th power (100 megohms) resistance when 50 volts are applied via an electrode to the hand of a person wearing the SD test samples on a conductive ground plate Removable, single-density Polyurethane footbed Cement construction Crosstrex 360 outsole Product Features: Outsole:Crosstrex 360 Upper:Leather; Mesh Toe Protection:Composite Support (shank):Composite Footbed:Single-density Polyurethane, removable Construction:Cement Thorogood Men's Crosstrex SD Safety Toe Hiker Work Shoe