These are sets of coasters, 4 coasters to a set. These are round coasters. There are three variations to choose from: Sandstone (most expensive but most absorbent), Hardboard: Long lasting but less expensive, and Neoprene: The thinnest and least expensive but still having great utility. This set comes plain. If you want to make them more personal, check out the other set that allows you to add a monogram in the center.