Ugg Boots are a type of footwear made from sheepskin, typically featuring a soft fleece lining. They originated in Australia and became popular for their comfort and warmth, making them ideal for cold weather. The boots usually have a simple, slip-on design and are available in various colors and styles. These boots gained widespread popularity in the early 2000s, especially in the United States, where they became a fashion trend. While originally designed for outdoor use, many people wear Ugg Boots as casual indoor footwear. They are often paired with jeans or leggings for a cozy, laid-back look.