CounterArt decorative coasters feature a natural stoneware construction that absorbs drips and condensation from beverages protecting your tables and countertops. A durable natural cork backing on each coaster also prevents scratches on your furniture. Features . Set of 4 absorbent coasters with attractive design marries artistic form with high function.. Coasters are natural stoneware with decorative transfer print.. Each coaster has a durable cork backing to protect countertops and furniture.. To remove stains soak coaster in 1 part household bleach and 3 parts water until stain lifts then rinse and air dry.. Dimension - 4.00 L x 4.00 W x 1.00 D in.