CounterArt Spring Gnome Assorted Designs Absorbent Stone Tumbled Tile Coasters 4 Pack. Each Coaster has a different coordinating design and measures 4” by 4” square. Made in the USA of absorbent stone to absorb excess condensation from beverages. Cork backing protects your surfaces from scratches and stains. Beautiful artistic design allows the Coasters to remain displayed even when not in use. Makes a wonderful housewarming, Birthday, or Holiday gift.