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 Ortholite® climate breathable footbed. The sole and upper are also compatible with most common climbing irons. Disclaimer: This footwear is Electrical Hazard and tested in accordance with the test method as set out within ASTM F2412-18. This protection deteriorates rapidly in humid, damp and wet environments and with wear. Electrical Hazard (EH) Safety footwear is intended as secondary source protection equipment.