From UGG, the Women's Adirondack Meridian Hiker Waterproof Leather Cold Weather Winter Booties feature: Waterproof leather upper Weather rated -32C Water repellent materials UGGplush™ upcycled wool, TENCEL™ Lyocell collar GORE-TEX internal membrane Embossed UGG® logo Gusseted tongue with water repellent coating UGGextreme™ reflective silver woven tongue label UGGextreme™ reflective silver TPU print on webbing heel pull Non-wicking reflective ticked laces with metal speedlace eyelets UGGplush™ upcycled wool, TENCEL™ Lyocell lining UGGplush™  upcycled wool, TENCEL™ Lyocell sockliner PU foam footbed incorporates Susterra® plant-based compound and PU from petroleum Midsole incorporates sugarcane Vibram ® outsole with ICETREK rubber compound, lightweight and textured rubber mudguard Vibram® Traction Lug technology Approx. 4" boot shaft height Approx. 14.6" boot shaft circumference Imported.