The Men's Alpinist Jacket is one of Marmot's most technical Pro Shells. With 3-layer Gore-tex, and 100% taped seams, the Alpinist is highly waterproof with increased mobility. Equipped for the mountain, this Marmot shell has an adjustable hood that is helmet compatible, and a Driclime Lined Chin Guard. With Core PitZips, and an Integrated Laser-Drilled Pocket Backing, this breathable Pro Shell will excel in the backcountry, or on your more intense hiking treks. Marmot's Alpinist Jacket will cover your most extreme adventures.