Knee length Dielectric safety boot 4mm neoprene lining comfort tested to -50°C Meets safety standards – EN ISO 20345:2011 SB, E, HRO, FO, ASTM F2413 (M/I/75/C/75) Meets electrical standards – EN 50321:2018 (Class 2) (20kV), ASTM F1117 (20kV) Arc flash protection – Meets ASTM F2621 and IEC 61482-1-1 Method B resulting in no ignition, dripping or melting at 40Cal/cm² Unique serial number on each pair to aid PPE management Ergonomically designed to secure the foot and enhance stability Super-flex™ ozone and flex resistant rubber upper Revolutionary 360 SureGrip outsole, resistant to oil, acid and heat Quatro ComfortForm steel toe cap Quatro comfort system insole Skellerup Quatro Dielectric Thermal Boot