UggFull-grain leather upper foot with a waterproof eVent membrane► Quilted nylon shaft with zip-up back closure and cord & toggle at the cuff for an adjustable fit► Shafts lined in sheepskin shearling from the ankle up► Removable & replaceable sheepskin insoles► Vibram outsoles with repeated lug pattern at the foot's natural flex points for superior traction and flexibility Leather & textile upper, sheepskin & synthetic lining, rubber outsole(T)