Hand painted in stained glass style, with glass paint, on Plexiglass. Painted on the underside of coaster to protect painting from damage. If painting is already finished, will ship next day. If painting needs to be completed, will ship in 3 days from purchase. Multiples can be made at additional charge, and additional time to paint. To clean, wipe with damp cloth, do not immerse in water. Coasters may have either clear plastic or cork on bottom. Thanks for looking!  Comes in set of 4.