The Patagonia Men's M10 Jacket is a 3-layer shell for alpine adventures. H2No Performance Standard shell Features 100% nylon ripstop and a waterproof/breathable membrane, plus a durable water repellent finish: all in the name of keeping you dry. It blocks bone-chilling winds as well with a helmet-compatible hood for your head. The hand pockets have been placed High to leave plenty of room for your harness and the chest pocket doubles as a stuff sack for tucking the whole thing away into your pack or clipping on your harness. Features of the Patagonia Men's M10 Jacket H2No Performance Standard shell is built with ultralight, 3-layer, waterproof/breathable nylon ripstop with a DWR finish Ultrasonic-welded seams Are reinforced with narrow seam tape for superlow bulk Alpine helmet-compatible hood with laminated visor and singlepull adjustment rolls down and stows with a simplified cord-and-hook design Two High handwarmer pockets and exterior left-chest pocket have coated, watertight zippers Self-stuffs into chest pocket with carabiner clip-in loop Minimal self-fabric hook-and-loop cuff closures; drawcord hem