The Mammut Men's Eigerjoch Down Jacket warms you on frigid ski tours, freezing belays at ice crags, and anywhere cold from the city to the alpine. Light and lofty 800 fill down insulation makes the Eigerjoch surprisingly warm, superlight, and extremely compressible and packable. A double chamber construction overlaps baffles to eliminate cold spots, and Mammut added synthetic insulation at the back and underarms to stay warm when sweaty and wet. Mammut wrapped the Eigerjoch's light, protective, and innovative insulation in Pertex Endurance for extreme water resistance, excellent breathability, and ultra thin air permeability. Endurance's air permeability breathes the moment you put it on, as opposed to standard breathable fabrics that only start breathing after you start sweating. This down jacket also features Lycra hand gaiters with thumbholes, an adjustable drawcord at the hem, multiple pockets, and an additional packing bag for compact storage in ski packs.