Set of Four Decorative and Absorbent Drink Coasters. Ambiance Coasters are mini pieces of artwork framed by a stylish border. Whether for casual entertaining or more formal dining Ambiance coasters add a touch of functional beauty to every home. These absorbent coasters measure 4.25 and are corked back to protect furniture. The coasters are made of Gypsum a natural and absorbent mineral. Enjoy your coasters for years to come. Printed and Packaged in the U.S.A.