For the ultralight minimalist who requires functionality and style, the men's ultralight down Zetto Jacket is a light-as-air full-zip, hooded layer for performance and warmth. Built to perform as a mid-layer for stop and go cold-weather sports, and warm enough to be your outermost layer on a bluebird winter day, the Zetto Jacket is a technical performance piece with sustainable materials that provide weight savings and simplicity so you can stash this insulated layer on the go all year long.Specs + SizingFeaturesRegular fit with Pinneco CoreA(R) in front torso to boost body warmth and optimize dryness. Pinneco Mantle(TM) on back and sleeves increase insulation performance and water resistance. Zip hand pockets, large interior mesh drop-in pockets, and a chest pocket that doubles as a stuff sack. Covert adjustable draw-cords in hood and hem. Built-in hood visor adds weatherproofing and increased visibility. YKK VislonA(R) zippers with textured zipper pull for ease of use. Stealth, no-draft thumb holes insulate hands while eliminating the gap between sleeve and glove.Construction + MaterialsSize Medium Weight: 14oz / 397gShell: bluesignA(R) certified, GRS certified 20D 100% post-industrial recycled nylon rip-stop, PFOA and PFOS free water-repellent chemistryLining: GRS certified 20D 100% post-consumer recycled polyester taffeta, PFOA, and PFOS free water-repellent finishInsulation: Pinneco CoreA(R) - 50% recycled polyester with breathable membrane. Pinneco Mantle(TM) - 100% post-consumer recycled polyester PET.