Style and performance rolled in one, the UGG Sundance Waterproof Boot is a must-have. The Vibram outsole with ArcticGrip non-slip rubber ensures exceptional traction on icy terrain, while a sheepskin insole and lining provide a luxurious feel. This waterproof boot also features the Treadlite by UGG midsole for added comfort and support with every step. 17mm sheepskin insole and lining Treadlite by UGG midsole Vibram outsole with ArcticGrip non-slip rubber Waterproof upper Seam-sealed waterproof