This square coaster is perfect for use at work or at home and makes a great Christmas gift. Our 4 color coaster is a reproduction of a post card featuring a Texas International Airlines DC9. It is laminated with a cork back. This 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 logo's and images. Check them out!