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.