Blending high-performance technical features with UGGextreme comfort and maximalist style, this winter boot is ready to take on chilly weather, rated to withstand temps as low as -32°C. It's crafted from top-quality waterproof leather and features an internal GORE-TEX, waterproof yet breathable layer. The canvas collar is filled with responsibly recycled polyester featherless down and can be cuffed or worn up for even more defense against the elements. The interior is finished with our signature UGGplush blend for a soft, cozy, unmistakably UGG® feel. The midsole is made from sugarcane EVA and finished with a Vibram® ICETREK outsole for cold resistance and ICETREK panels for enhanced traction. This product was made in a factory that supports women in our supply chain with the help of Reimagining Industry to Support Equality (RISE). This collaborative initiative creates partnerships with brands like ours to empower and educate women in the workplace. Waterproof. Waterproof leather. Gusseted tongue with water repellent coating. GORE-TEX internal membrane bootie. GORE-TEX seam seal tape. Canvas collar made from 100% recycled polyester fibers, Front pull tab, Heel counter puller. Recycled polyester laces. 17mm UGGplush 60% upcycled wool, 40% TENCEL Lyocell vamp lining, 3M Thinsulate Insulation (78% recycled polyester fibers, 22% polyester fibers). 17mm UGGplush 60% upcycled wool, 40% TENCEL Lyocell sockliner. Sugarcane EVA midsole. Vibram® outsole with Arctic Grip for traction, Vibram® outsole with ICETREK rubber compound. The UGG® Logo on tongue, embossed, The Graphic UGG Font embossed on shaft, The UGG® Logo on heel, UGGextreme screen printed logo on heel pull, GORE-TEX woven label, Vibram® Logo on outsole sidewall. RN 88276. UGG® Shasta Boot Tall Leather/Waterproof Boots in Black, Size M12/W13