Rockfall Surge Safety Boots RF910 are 100% non-metallic, featuring a protective toecap and midsole, and are developed with specialist durability materials. The RF910 Surge is packed with safety features and designed to be sustainable. It includes a recycled plastic bottle upper, webbing, and lace materials with durability ratings, along with an Activ-Tex® Waterproof membrane that is breathable, tested for 8 hours, and contains 60% recycled content. Certified to withstand electrical risks of 18kV in accordance with the ASTM F2412-18 test method. It has a 100% non metallic construction, including a fibreglass toecap and composite midsole. The outsole complex is a dual density PU nitrile rubber outsole, offering exceptional abrasion resistance, shock absorption, and weight reduction. Features: 100% Non-Metallic Construction, Electrical Hazard, Heat Resistant Outsole to 300°C, Ladder Grip, Oil Resistant, Protective Midsole & Toecap, SRC Slip Rated, Water Repellent Upper, Cold Insulation, Sustainable.