100% cotton 12 oz. duck with water repellent finish with 6 oz. polyester fiberfill insulation. Features bi-swing back and two-way covered leg zippers that zip to the waist. Inside storage pocket, ruler and pliers pocket on both sides of garment. Adjustable leg hems and take-up snaps for better fit. Reinforced front hip pockets, double knee patches and inside storm cuffs. Corduroy collar with concealed snaps for optional hood.