Ugg boots are neutral sheepskin boots originated in Australia and New Zealand. Boots are usually made of two sheepskins, with fluff inside, tanned outer surfaces and synthetic soles. Ugg boots originated in Australia and originally refer to practical shoes for keeping warm, which were often worn by surfers in the 1960s. In the 1970s, boots were introduced into surfing culture in the United Kingdom and the United States. Sheepskin boots became a fashion trend in the United States in the late 1990s and a global trend in the mid-2000s. In Australia, they are mainly worn in the form of slippers and are often associated with a "baggy" fashion sense and "Bogan" culture.

Some sheepskin boot manufacturers had a previous legal dispute to distinguish whether "ugg" is a protected trademark or a general term, so it does not meet the requirements of trademark protection. In Australia and New Zealand, more than 70 registered trademarks include the word "ugg" in a variety of logos and designs, as the term is considered a common name for shoes. Outside Australia and New Zealand, ugg is a brand made by Deckers Outdoor Corporation, which is headquartered in California. Most of its manufacturing operations are located in China, and in more than 130 countries around the world (including the United States, the United Kingdom, Canada, all EU Member States, and China).

The manufacturers worth mentioning in Australia and New Zealand are Luda productions of Australia, which has a market share of about 75% in Australia. EMU Australia; Euram ugg; original boots from Blue Mountains ugg; mortels sheepskin factory; bear paw; uggs-n-rugs; binder company and Westhaven industry. Deckers is a leading manufacturer of footwear styles outside Australia. By 2010, the global sales volume of Australian manufacturers is equivalent to 5.9% of the sales volume of Deckers ugg boots [9], in which ugg dominates the world market.