Geek Flowers: Tile Coaster $5.50 convert currency Qty:    AVAILABILITY: Product Number: 3486913 Product Information Liven up any room or party with our fun, hip tile coasters, measuring 4.25"� x 4.25"� and 1/6-inch thick. Images are applied with a polyester resin that accepts dye as part of the coating. Four felt pads protect your furniture from scratches. Dishwasher safe. Not for use with abrasive cups and mugs.