Each coaster is sealed and includes a cork backing. Every piece is hand poured and subject to variation in color and texture, making each piece unique. Please note air bubbles may be present due to the nature of concrete. 

Diameter: 4 inches 
Material: Concrete
Quantity: 4 coasters 

To keep clean, wipe with a damp towel.
Sealer is moisture repellent, however over time a natural patina may occur. Wipe off food spills as soon as possible to prevent staining.