Thirstystone Productive 4 Pack Tumbled Tile Stone Coaster. Manufactured in the USA of absorbent stone to absorb excess condensation from beverages. Cork backing protects your surfaces from scratches and stains. Coaster measures 4” by 4” Square allowing for a larger glass or cup to be placed on them. This Coaster fits perfectly in a plant or basket to be given to friends and family. Give as a hostess gift or keep for yourself.