Super down. Crossing the Eigerjöcher is a great mountain adventure for experienced alpinists and calls for suitable equipment. Not only on the Eiger, but in high mountain terrain all over the world, on cool days, you need to take along a warm, lightweight insulating jacket that fits under a hard shell and can also be worn as an outer layer. The Mammut Eigerjoch Advanced IN Hooded Jacket is an innovative and uncompromising down jacket with an outstanding warmth-to-weight ratio. The torso area of the high-end jacket is filled with water-repellent 90/10 goose down with 850 cuin puff strength, sourced from animal-friendly operations. Under the arms and on the hood, PrimaLoft® Gold Active inserts with 4-way stretch ensure optimal moisture-wicking and freedom of movement – with or without a helmet. To ensure the Eigerjoch survives even contact with rocks and your heavy backpack unscathed, the water-repellent and highly abrasion-proof Pertex® Quantum is used as the outer material. And, because we don’t assume that you will simply wear the jacket in the bivouac or outside the hut, the Eigerjoch Advanced IN Hooded Jacket is based on the same revolutionary pattern as the Nordwand jackets, to ensure a perfect fit when climbing and mountaineering. The pockets are accessible even when wearing a climbing harness and the elasticated cuffs stop cold air from penetrating inside. And if you take the Eigerjoch Advanced IN Hooded Jacket off, you can simply pack it up in the chest pocket.