Great beach coasters, Beach lover! Perfect for a hostess gift, housewarming gift, new shore house. The tiles are backed with cork to protect furniture from moisture and scratches. Each coaster takes on different appearances due to the underlying marble tile which has its unique veins, pitting and marbleizing. The beauty of the marble shines through giving it a beautiful weathered look. CARE: Wipe with a damp soft cloth. Not dishwasher or oven safe. .