Welding trousers Bizflame FR401: Innovative stretch panels; Adjustable hem for all leg lengths; 100% Metal Free; Flame retardant striping; knee pockets, 8 storage bags, UPF 40+ fabric blocks 98% of UV radiation. Quality: Bizflame Plus: 99% Cotton, 1% Carbon Fiber 210g. Available sizes: S-3XL. Available colors: Navy. Complies with: EN ISO 11612 A1+A2, B1, C1, E2, F1, EN ISO 11611 Class 1 A1+A2, EN 1149 -5 and IEC 61482-2 IEC 61482-1-1 ELIM 9 CAL/CM².