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.