Alpinists search for objectives that require all their skills, and for them, we built a jacket to match that ethos: If you want to make the best thing possible, you have to use the best ingredients. The Alpenice combines three technologies in an ultralight package for alpine pursuits: Ascent- Shell on the sleeves and shoulders, Polartec Alpha insulation, and Pertex Microlight fabric for breathability on the torso.