Buy the ticket, take the ride. The Marmot Men's Headwall Jacket is Marmot's go big or go home jacket, built for active, cold weather use. The seam taped, superlight 20 denier stretch NanoPro MemBrain fabric shell is fully waterproof and filled with Primaloft Silver insulation, a lightweight active insulation which allows more air movement. Backed with an inner AirExchange lining that ups the ante of breathability, technical features abound in this breathable, compressible hyper specialized package. Superlight, 20 denier NanoPro MemBrain 100% nylon stretch ripstop shell, 2.1 oz. yd. Waterproof breathable fabric. Primaloft Silver insulation active. 100% seam taped. Attached, helmet compatible hood with peripheral cord adjustment. Pack pockets with water resistant zippers. AirExchange lining for breathability. Chest pocket with water resistant zipper. Internal zippered pocket. Interior mesh storage pocket. Adjustable, Velcro fastener closure cuff. Elastic drawcord hem. Angel Wing movement. Regular fit. Avg. wt. 1 lb. 7 oz. 652 g. Center back length: 29.