The weather in the high mountains is always unpredictable and often brutal, so be prepared for whatever conditions you face with the Mammut Men’s Teton Jacket. It offers the lightweight protection you’ll need on alpine pursuits when the forecast is less than favorable. Three-layer Gore-Tex offers completely waterproof protection in a highly breathable package so you don’t overheat during intense ascents. Underarm ventilation ensures all the airflow your hardworking body needs, and waterproof zippers prevent seepage. Mammut also equipped this jacket with a helmet-compatible hood that you can adjust both vertically and horizontally, pre-shaped sleeves for an ease of movement on the wall, hook-and-loop cuffs and a drawcord hem for a snug fit, and two large zippered front pockets that you can always access when you have a harness or backpack on.