Perfect for snowy, wet weather - the women's UGG Adirondack Boot II features a waterproof full grain leather upper with a breathable eVent? membrane. An exclusive Vibram? outsole provides durability and traction. Completely lined in genuine sheepskin, this functional calf-height boot will keep you extremely comfortable and warm. The Adirondack Boot II comes with removable/replaceable genuine sheepskin insoles as an added feature.