Coasters are small, flat items designed to protect surfaces from moisture, heat, and scratches caused by beverages and other items. They are typically used on tables and other flat surfaces to prevent rings and other marks from forming, and are especially useful for protecting delicate or expensive surfaces, such as wood or marble. Coasters come in a variety of materials, including cork, stone, ceramic, and metal, with different shapes, sizes, and designs to suit different preferences and decor styles.
