... 12% nylon, water repellant Insulation - Flame resistant 12 oz. two layer quilted Modacrylic® Features: Separating, heavy duty, NOMEX® taped brass zipper ... , fully covered w/two layer storm flap, concealed snap closure Fully insulated stand-up collar ... Knit NOMEX® storm cuff within hemmed sleeve end Two large external patch pockets, w/concealed snap secured ...