Body: 13-oz 100% polyester (85% recycled) bonded '-pile fleece. Lining: 3.2-oz 100% polyester (50% recycled) warp-knit mesh with a windproof barrier and HeiQ Pure odor control. Chest pocket, outer collar and wind flap: 3.4-oz 100% nylon plain weave with W's Classic Retro X Vest - Natural w/Nouveau Green