Alpinestars Mens Descender WP Vest 100% Polyamide Imported Windproof design Lightweight Waterproof front zipper Lightweight and strong 2.5 layer vest constructed from a windproof and water resistant rip-stop fabric; Front zip closure with YKK zip backed by windproof flap. All zips tab feature easy-use pullers Lower back profile for increased lumbar coverage; Reflective detailing for increased visibility Works effectively even while wearing backpack