"Totally Beachin'" - Stone Car Coaster Cupholder. Round Car Coaster. This is an absorbent stone coaster that pictures flamingo on a blue background. It says, "Totally Beachin'." It measures about 2.625" in diameter x .3125" thick and fits most car cup holders. Having a small coaster like this is a great way to protect your car by catching the drips before they run off of your drink and onto your car upholstery!