From UGG®, the Bailey Zip Mini Boots feature: 17mm Twinface sheepskin upper Protected: Post Applied Treatment Topically applied water repellency treatment Lateral zipper 17mm sheepskin lining 17mm UGGplush™ 80% wool, 20% lyocell insole Treadlite by UGG™ outsole for comfort Polyester binding Leather heel label with embossed UGG® logo Approx. 5.5" shaft height This product contains artificially dyed and treated real sheep or lamb fur from Australia, UK, Ireland or US or Spain