The rugged FR36 trousers offers comfort strength and protection to several EN standards. Winning features include a comfort waistband, rule pocket and a handy patch pocket at the back. Ideal for combination with the FR35 jacket. Other features: back elastication, brass zip, triple stitched seams for durability. Fabric: Bizflame Pro 330g (99% cotton/1% carbon fibre), designed to provide flame, welding and anti-static protection. EN ISO 11612 A1 + A2 B1, C1, E3 & F1. EN ISO 11611 CLASS 1 A1 + A2. EN1149-5.