OXO Good Grips Coasters, Red, Purple, Green and Blue, Set of 8Reversible Coasters are concave on both sides to contain liquidGrooved pattern holds liquid to prevent leakingGrooves promote air flow to prevent Coaster from sticking to glasswareSturdy silicone is dishwasher safeSet includes 2 blue, 2 red, 2 green and 2 purple coasters
