Our coaster tiles are made from a proprietary ceramic blend which means they will absorb the condensation right off your glassware - no more water rings on your tables! **Our coasters are not dishwasher safe**, but you can wipe them with a cloth soaked in mild soap and warm water. Since the ceramic is absorbent, the quicker you wipe up any spills the better stain prevention for coloured beverages. 4"x4" absorbent ceramic coaster tile Versatile cork pad on bottom Durable UV printed graphics Natural look tumbled edges Marbled background Traditional Tile Design, Marbled Background, Water Rings, Ceramic Tile Coaster, Traditional Tile, Tile Coasters, More Water, Ceramic Coasters, Tile Design