Flame retardant work trousers with stretch for more comfort during work that requires optimal freedom of movement. Reinforced fly and stretch in the crotch area. Side pockets. Cargo bag with stretch and flap with concealed key ring, telephone pocket with flap. Ruler bag with tool pockets. Pre-shaped knees with knee pockets in HTFR Dobby and stretch. Stretch at the back. Back pockets with flap. Rear bottom reinforced with HTFR Dobby. Bottom legs adjustable with press studs. Entirely metal-free. Quality: Tera TX, 260 g / m². Available sizes: 44-64, 146-156, 96-120 EU. Available colors: Fluo yellow / navy. Compliant with: EN ISO 11612: A1 B1 C1 F1, IEC 61482-2: CL.1, EN 1149-5, EN ISO 20471: CL.1 (ARC RATING: 9.5 cal / cm²).