Women's Nightfall 5359 Black is made of genuine twin-faced sheepskin, which can keep warm while keep your feet dry, because this sheepskin can absorb the moister from the sweat. The insole which is made of sheepskin, latex and foam is movable, very convenient for moister releasing, too. The outsole is made of the molded rubber lug cup, quite durable and flexible. Matching with the black body, the wrap around lace is extremely cute. The 5359 Black is easy to keep clean. More colors are available: Chestnut, Chocolate, Grey and Sand.