Full-Grain Crazy Horse Leather Upper. Removable Persipiration Absorbing Dual Density PU Insole. Rubber Slip and Oil Resistant Outsole. High Heat Outsole to 600 Degrees Fahrenhite. Lenzi Puncture Resistant Plate for Enhanced Puncture Protection & Flexibility. Gore Tenara High Heat Thread Used in Upper Stitching for Greater Heat, Abrasion and Rot Resistance. Water Bladder System. Electrical Hazard Rated.