The Rock Fall Volta electrical hazard safety trainers developed with specialist materials that are certified to withstand electrical risks of 18kV in accordance with ASTM F2412-18. Protection deteriorates rapidly in humid, damp and wet environments and with wear. Intended as secondary source protection equipment, not for live working. With the BOA Fit System, turn the dial to tighten or loosen the trainers. Shock absorbing dual density EVA nitrile rubber outsole and Activ-Step 100% GRS recycled foam footbed. Meets Standard EN ISO 20345:2011 SB P E WRU FO SRC, ASTM F 2413-18 M/I/C PR EH.