Rip Tide Grid Set of 6. Ceramic tile coaster set of 4- 4.25 x 4.25 (inch). 2- 5 x 7 (inch) stretched canvas acrylic pourings. Colors: metallic teal and blue, and white. Coasters backed with cork backing to protect surfaces and resin sealed for added protection against hot and cold cups, mugs and glasses. Canvases are varnished. Set is ready to ship.