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 1950's ticket jacket cover featuring the Lockheed Constellation and 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. Available exclusively from AirlineEmployeeShop.com and at the DFW Employee Store.