These men's UGG Classic Ultra Mini chestnut winter boots are a stylish and comfortable choice for cold outdoors. Featuring 17mm twinface sheepskin upper, these pull-on boots have suede heel counter, back pull tab, woven heel label with The UGG® logo, 17mm UGGplush™ 80% upcycled wool, 20% TENCEL™ Lyocell insole or 17mm UGGplush™ 60% upcycled wool, 40% TENCEL™ Lyocell insole or 17mm sheepskin insole, foam footbed and Sugarcane EVA outsole or Treadlite by UGG™ EVA outsole. These boots comprise textile binding made from 100% recycled polyester fibers.