What are ugg boots?

Traditionally, ugg boots are Australian boots made from sheep skin, with wool as the inner lining and a tanned outer surface. The natural properties of sheep skin results in thermostatic benefits. Thick fleecy fibres on the inner part of the boots allow air to circulate during summer so that the feet do not become excessively warm. In winter, the sheep skin prevents heat loss and is highly effective. Ugg boots are designed to be worn without socks. The name ugg is probably derived from the word ugly to indicate their ugly look.