Light as a feather. On multi-pitch routes or mountain tours, every gram counts. However, a warm insulation jacket is an essential requirement in mountain terrain, to ensure you're prepared for any emergency. Even the hood of the Women's Miva IN Hooded Jacket is lined with down, making it an excellent choice. The outer material is water-repellent and withstands light showers, while a filling of goose down with a 750 fill power will keep you warm even at a belay station on ice climbs or at base camp.