A foot-covering is an item of clothing that is worn on the feet for protection, warmth, and fashion. The most common foot-coverings are socks, shoes, and boots. Socks are a thin, lightweight garment that covers the foot and ankle and is usually made of a soft material such as cotton or wool. Shoes are a type of footwear that covers the entire foot and is typically made of leather or synthetic materials. Boots are a type of footwear that covers the foot and part of the leg and is usually made of a thicker material such as leather or rubber.