100% non-metallic, with protective toecap and midsole, PowerMax is an electrical hazard linesworker boot developed with specialist durability materials that are certified to withstand electrical risks of 18kV in accordance with the ASTM F2412-18 test method, including FORCE10® components, Helcor® abrasion resistant leather, Moisture-tech by Sympatex® waterproof membrane, IMPACT SHIELD™, R-TEN™ thread and Activ-Step® Comfort Footbed. The sole and upper are also compatible with most common climbing irons.