100% nylon (shell and liner). Durable nylon shoulder overlays resist wear and snags. Waterproof venting zippers on chest regulate body heat. Mesh back panel wicks moisture. Waterproof zip-secure chest and hand pockets (shell). Removable, dual adjustability hood. Soft Merrell Conductor Ultralight chin guards prevent chafing. Internal mesh stash pocket. Drawcord adjustable waist on liner and shell.