Coasters are one of those things many people do not think about today but they should. They protect the surface of tables from scratches and ugly stains. When wood tables come into the picture, there is no question that coasters are a must. The condensation from glasses or mugs can do permanent damage on wood surfaces. These brown and white marble coasters are beautiful and will add to the room decor. Beautiful marble coasters will look nice out in the open even when not in use. Coasters protect various surfaces from scratches and unsightly rings on the table. Always use a coaster to protect wood surfaces for permanent damage. 4"L x 4"W x .5"H.