Ugg Aya Waterproof Boots 7M Brand New With Box If you plan on hitting the slopes, bring fresh style with you in the Aya Waterproof boots. Waterproof leather, sheepskin, and nubuck uppers. Full lace-up adjustability. Cozy sheepskin lining. Cushioned sheepskin insole. Treadlite by UGG™ midsole. Vibram® outsole with Arctic Grip. Real sheep fur or lamb has been artificially dyed and treated. Fur origin: Australia, European Union or the United States.