From UGG, the Adirondack Boot XXV Chalet Waterproof Winter Booties feature: Waterproof leather and suede upper Waterproof membrane bootie construction 3M™ Xerogel Insulation, DryTech Technology Gusseted Brisa sheepskin cuff Cuffable shaft  Rear and front pull tabs  Brisa sheepskin cuff Lace up closure Laces made from 100% recycled polyester fibers Additional set of laces included The UGG® Logo on tongue 17mm sheepskin shaft lining, Faux fur lining made from 100% recycled polyester fibers 17mm UGGplush™ 60% upcycled wool, 40% TENCEL™ Lyocell sockliner Poured PU footbed incorporates at least 50% bio-based content Sugarcane EVA midsole Vibram® Logo on outsole sidewall Vibram® outsole with ICETREK rubber compound Approx. 7” boot shaft height Approx. 16” boot shaft circumference Approx. 1.5” heel height   Imported.  Styling Notes: This product contains real fur from sheep or lamb. Fur may be sourced from Australia, Ireland, the United Kingdom, or the United States. It has been artificially dyed and treated. Cold-Weather rated to -32°C