The North Face Women's Nuptse Bootie Fur IV Apres Boots is quite possibly the warmest and most comfortable slip-on footwear on the planet. It is suitable for everyday wear on winter walks or at Everest base camp with IcePick® traction, down fill, and tough fabric made from recycled bottles. It has an internal ankle securing elastic for support while navigating tricky terrain. A full 700 fill power down construction keeps in the warmth to keep you comfortable.