Linings are materials used to cover the inner surfaces of garments, bags, or other items. They serve various purposes, such as providing comfort, improving appearance, and adding warmth. Common lining materials include cotton, polyester, and silk, which can enhance the overall quality of the product. In clothing, linings can help garments maintain their shape and prevent wear against the skin. For example, a jacket may have a satin lining to make it easier to put on and take off. Additionally, linings can add a pop of color or pattern, making the item more visually appealing.