Ugg boots (sometimes referred to as uggs or ug boots) are a style of sheepskin boot, with wool as the inner lining and a tanned outer surface worn by both men and women. Ugg boots often have a synthetic sole, although this is not universal. Uggs have been identified as a fashion trend for men and women since the early 2000s. In late 2008,
fake uggs grew again in popularity with men as male celebrities were seen in them.
In the Arctic and China, sheepskin boots have long been popular with people in rural occupations, such as sheep shearers, who have ready access to the raw materials.