Thirstystone Single Image Absorbent Stone Tumbled Tile Coasters. Manufactured in the USA in our Springfield TN facility. Constructed of absorbent stone to absorb excess condensation from beverages. Cork backing protects your surfaces from scratches and stains. Each Coaster measures 4 inch by 4 inch square. Beautiful artistic designs allow the Coaster to remain displayed even when not in use. This 4 pack Coaster Set makes a wonderful gift for family and friends at any time of the year. Arrives in clear acetate box with hang tab.