Customers can protect surfaces from rings from condensation when you send them home from an event with these great coasters! Made from absorbent materials such as natural stone or ceramic, these coasters effectively soak up condensation and drips from beverages, preventing them from damaging car interiors. Their compact size and non-slip bottoms ensure a secure fit in most standard car cup holders, providing a stable surface for drinks while on the move. Measuring 4 1/4" in diameter with an off-white color, these absorbent stone coasters can be customized with a one color, one side imprint, perfect for displaying a brand name, logo or message. Great for bars, tradeshow giveaways, holiday gifts and much more! This is a set of 4 coasters.