Lightweight, windproof, and lightly insulated, the Mountain Equipment Men's Kinesis Insulated Jacket is designed for demanding alpine routes. Since the weather is almost certain to change as you make your way up big walls, pack the Kinesis into the hand pocket and attach it to your harness with the carabiner carry loop while adding only 11. 5 ounces to your rack. Mountain Equipment's Helium 30 fabric weighs next to nothing and is completely windproof, and with breathable Polartec Alpha insulation in the body, you can even wear it on the approach without sweating out your baselayers. A moisture wicking micro grid lining in the sleeves and hood keeps you dry when you wear it on the wall, and elasticized cuffs and drawcord adjustable hem seals in heat once you top out on the cold and windy summit.