Fire Retardant Anti Static Hi Viz Class 1 Tesla Trousers En471 FRAS -Beeswift Click Cfrastetsy \'TESLA\' Fire retardant, anti static trousers. 320gsm Hi Vis flame retardant treated fabric with anti static grid YKK Brass zip fly Brass hook and bar waistband fastening 7 Belt loops Two vertical side seam access pockets 2 Bands retro reflective tape to legs FR & AS logos embroidered to left hip Plain ankles Available in tall leg (T) option EN ISO 11612: 2008 A1, B1, C1 A - Limited Flame Spread B - Convective Heat Resistance C - Radiant Heat Resistance EN1149-5: 2008 Electrostatic Surface Resistivity EN ISO 20471 Class 1 high visibility