Alpinestars: With a classic sleeveless design the Descender Windproof Vest is constructed from a lightweight and durable rip-stop fabric. A full, back mesh ventilation panel means this vest offer great breathability even when worn with a backpack.• Lightweight and strong 2.5 layer vest constructed from a windproof and water resistant rip-stop fabric.• Full back mesh ventilation panel helps keep body temperature low while protecting against wind; works effectively even while wearing backpack.• Front pocket features waterproof YKK zip closure to seal out elements.• Micro-fleece textile collar lining for comfort.• Front zip closure with YKK zip backed by windproof flap. All zips tab feature easy-use pullers.• Elasticized waist incorporates silicon webbing on hem to keep jacket in position.• Lower back profile for increased lumbar coverage.• Reflective detailing for increased visibility.• Regular fit, sleeveless design means vest is a perfect versatile mid-season garment.