Backyard Birds Coasters, #390, is a set of 4 coasters, and each one measures 3.67" sq. x .313" thick, and puts an end to messy beverage drips that can damage your furniture. Extensive research has resulted in a unique busque tile that is the most absorbent and stylish coaster on the market today. The porous surface absords drips before they reach the bottom of the glass or your furniture. They clean easily with mild liquid detergent and water to give you years of dependable service. Your furniture will thank you. Make sure and check out our matching trivets, cutting boards, and clocks, plus more.