CounterArt Monterey Bay Octopus Absorbent Coasters, Set of 4 Set of 4 absorbent natural stoneware coasters with attractive design in a decorative transfer print Each coaster has a durable cork backing to protect countertops and furniture; measures 4 inches across To remove stains, soak coaster in 1 part household bleach and 3 parts water until stain lifts, then rinse and air dry Holders available-Look for CounterArt coaster holders ( sold separately) Look for additional CounterArt items in Monterey Bay sealife design: Glass cutting board, lazy susan, cheese server tumbled tile trivet, butler tray, placemats