An amazing core insulation layer, the Men's Diez Vest from The North Face is a super lightweight 900 fill down vest with a 10 denier Nylon ripstop fabric. Weighing in at only 11 ounces, the Diez Vest will provide superior insulation during all out, alpine style summit bids. Features that The North Face has made sure to include are two hand pockets, an alpine fit, a hem cinch-cord, and the vest stows in one of the hand pockets.