Sheepskin boots are footwear made from the hide of sheep, often lined with soft wool for warmth and comfort. They are popular for their insulation properties, making them ideal for cold weather. The natural fibers allow for breathability, helping to regulate temperature and moisture. These boots are commonly associated with the brand UGG, which popularized the style in the early 2000s. Sheepskin boots come in various designs, including ankle and knee-high options, and are often worn casually. Their durability and comfort make them a favored choice for both indoor and outdoor wear.