Alpine Downlab is an experiment in exploring the possibilities of nature's lightest, most packable insulation. The 800-fill-power AlpLight Down Pullover uses NetPlus, a 100% postconsumer recycled nylon fabric made from recycled fishing nets to help reduce ocean plastic pollution, and was designed for cool-weather missions when you need a featherlight insulating layer that packs down small and still keeps you warm. Fair Trade Certified sewn.