UGG sundance boots are made with the finest twin-faced sheepskin, which are extremely warm, soft and elastic. The sheepskin can absorb the moister from the sweat, too. UGG sundance boots black feature a replaceable fleece insole and mylar lining that provides extra warmth. You will feel the warmness as long as you look at the exposed sheepskin. The suede heel has been reinforced for several complex procedures. UGG sundance boots black is chic, and will make your leg look slim and long, much sexy than ever.