This jacket will work hard for your business! Our men's brown duck hooded jacket features a concealed, snap-front, storm flap closure. With a lanyard access opening on the center back, this jacket accommodates a safety harness, snap-on hood and vest jacket liner, sold separately. Made of 11.0 oz. (375 g/m sq.) duck, 88% cotton / 12% nylon, this jacket is both flame resistant and water repellent and has a 6.5 oz. (220 g/m sq.) 70% Nomex®/30% Lenzing® flame resistant liner. HRC rated 4. ARC rating ATPV 41 calories/cm sq.