Separating, heavy-duty, Nomex® taped brass zipper, fully covered with two-layer storm flap, concealed snap closure › Fully insulated stand-up collar › Knit storm cuff within hemmed sleeve ends › Two large external patch pockets, with concealed snap secured flaps with hand warmers › One inside chest pocket › Deep-pleated action back › Fully-tunneled elasticized waistband › Inside zipper guards on all zippers. Fabric Shell: Westex Ultrasoft® Flame-resistant 7 oz. (235 g/m²) Twill 88% Cotton / 12% Nylon, Water-Repellent. Lining: 100% Cotton. Insulation Package: 12 oz. (405 g/m²) 100% Modacrylic. Arc Rating ATPV 34 calories/cm².