80% Polyester, 20% Cotton. Fabric: Reinforced. Design: Contrast Detail, Reflective. 245gsm. Fastening: Button, Zip Fly. Fabric Technology: Durable. Belt Loops, Hammer Loop, Pre-Bent Knees. Pockets: 2 Front Pockets, 2 Thigh Pockets, 2 Back Pockets, Flap Closure, 2 Holster Pockets. Conforms to Safety Standard: EN ISO 20471 Class 2. Ref: UTBC7784