The UGG Australia® Adirondack Boot II is the perfect cold weather boot to sport style all winter long. UGG Australia® teamed up with Vibram to produce a technical and sleek outsole designed specifically for UGG Australia®. A Gore-Tex upper allows this boot to be waterproof, windproof & breathable. In addition, a removable sheepskin sockliner provides extra warmth & comfort. This UGG Australia® classic lace-up boot trimmed in sheepskin embodies all your functional needs in the elements without sacrificing great looks!