The Patagonia Men's Nano Puff Vest punches above its weight, trapping your heat and keeping you dry all winter. It is made with warm PrimaLoft Gold Insulation Eco that is filled with 100% post-consumer recycled content, making this vest the most thermally efficient synthetic insulation available. The windproof and moisture-shedding 100% recycled polyester ripstop shell with a durable water-repellent finish adds extra protection to stay dry and warm. The vest has a shaped fit, a soft, wicking interior storm flap, and a zipper garage for chin comfort. Other fine points include a drawcord hem, two zippered handwarmer pockets, and an internal chest pocket with a clip-in loop that doubles as a stuff sack. The Patagonia Men's Nano Puff Vest pairs nicely with your favorite flannel and is ready to take on everyday adventures.