TESLA fire retardant anti static trousers made from 320 gsm High Visibility 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 and AS logos embroidered to left hip. Plain ankles. 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. Machine washable at 40 degrees C up to a maximum of 5 cycles.