UGG Men's Butte Snow Boot 100% Cow Leather WP, Cow Suede, Synthetic Imported Faux Fur (84% Leather, 16% Synthetic) Synthetic sole Shaft measures approximately 7.5" from arch By UGG UGGpure wool lining Vibram outsole with lug tread Waterproof construction Cold weather rated to -20 degrees celsius Foam moulded for shaping