A twin size blanket is designed to fit a twin bed, which typically measures 38 inches wide by 75 inches long. These blankets provide warmth and comfort for one person, making them ideal for children's rooms, guest beds, or smaller spaces. Twin size blankets come in various materials, such as cotton, fleece, or polyester, and are available in numerous colors and patterns. They are often used for layering with other bedding items, like sheets and comforters, to create a cozy sleeping environment.