NIKE Men's Aeroloft 800 Running Vest BLACK AUTHENTIC 548152-010 Dri-FIT mesh shoulder panels help you stay cool, dry and comfortable Machine wash cold and tumble dry low (with a tennis ball to help fluff up the down) Elastic binding on the armholes and hem for a secure, comfortable fit Fabric: Body/lining: Dri-FIT 100% polyester. Fill: minimum 90% goose down