This square coaster is perfect for use at work or at home and makes a great Christmas gift. Our 4 color coaster with a reproduction of a painting by the artist Rick Broome of a Frontier Airlines Convair 580 inflight over the Rockies is laminated with a cork back. The coaster measures 3.75" x 3.75". Get 4 of the same coaster for just $10. Sorry we can't mix and match on the 4 pack orders. More coasters on our website with other Rick Broome images Check them all out! Available exclusively from AirlineEmployeeShop.com and at the DFW Employee Store.