The warmth of a down jacket without the bulk, Mountain Hardwear's Sub-Zero Vest uses the natural warmth and compressibility of goose down to hold heat in close to your torso while still leaving your arms free to grab that ledge, work the ski poles, or make morning coffee Features: Highly durable and extra-warm, 650-fill goose down drapes softly around your body to reduce air pockets and stuff down small Go ahead, trudge through the trees to ripstop nylon shell won't cut or abrade while the nylon taslan shoulders take the brunt of the abuse Seal in the warmth and seal out snow to one-handed hem and lower back drawcords can be easily operated without taking off your mittens Dual zippered, fleece-lined handwarmer pockets, 1 zippered chest pocket and 1 interior zippered chest pocket keep small items handy When the weather is warmer, pack your vest away in the included waterproof stuff sack Specifications: Average weight: 1 lb 1 oz Insulation: 650-fill goose down Shell fabric: Conduit SL Lining fabric: Nylon taffetaSpecifications based on size Medium