Falling temperatures call for the down-filled warmth and comfort of the carhartt alpine jacket serious cold weather gear, it"s constructed of 3-ounce, 100% nylon with 550-fill 75% duck down, 25% feathers plus double-needle baffles more warmth is afforded by the pull-up hood and drop tail for keys and all else that you carry, the jacket"s outfitted with an interior safety pocket with a hook-and-loop closure, plus two lower-front pockets