The single most important element for keeping warm? Core insulation. Our Down Vest uses a durable, lightweight, down proof and highly water-repellent shell fabric and 700-fill-power premium European goose down. The collar is lined with a soft, brushed polyester for next-to-skin comfort. Details include zippered handwarmer pockets, a drawcord hem, an interior zippered stash pocket and a stuff sack. Imported M's Down Vest