100% polyester. Multi use cargo thigh pocket with zip side, toughened, articulated knee panels, rubber tear release pocket trim, critical stress point bar tacking, YKK zip with button fastening, toughened ankle scuff panel, triple needle stitched seams, hand warmer side pockets, expandable waistband, reflective detailing, rear pockets, hammer loop, rule pocket, belt loops, durable & hardwearing finish, expansion waistband for adjustable fit & draught protection.