Boots designed to support the natural movment of your foot - these Ergo Collection boots are anatomically accurate to enhance stability, flexibility and comfort. Features include: SRX best-in-class slip resistant outsole, ASTM F2413-05 I/75 C/75 steel toe, STM 2413-05 I/75 EH electrical hazard, Waterproof leather upper, Nylon mesh lining, Removable perforated EVA with Gel Technology insert for comfort, High performance rubber outsole, Insulated with 400 grams of patented thermal technology to keep your feet warm and comfortable.