round or square shape cork, wood, plastic, or metal material decorative designs or images a non-slip base to prevent sliding a lip or edge to contain spills raised ridges or patterns to absorb condensation
coaster which has round or square shape coaster which has cork, wood, plastic, or metal material coaster which has decorative designs or images coaster which is a non-slip base to prevent sliding coaster which is a lip or edge to contain spills coaster which has raised ridges or patterns to absorb condensation