100% non-metallic, with protective toecap and midsole, PowerMax is an electrical hazard linesman 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.Upper Materials: Water repellent full grain black leather with Helcor abrasion resistant leather stitched with R-TEN abrasion resistant thread Protective Components: Protective fibreglass toecap and composite anti-penetration flexi-midsoleInternal Linings: Moisture-tech by Sympatex waterproof and breathable bootie membrane - tested for 100 hours (74 times longer than EN requirement)Outsole: FORCE10 scuff cap and dual density PU nitrile rubber outsole - tested to extraordinary abrasion,