This round 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 Northwest Airlines Airmail Sticker from the 1940's. It is laminated with a cork back. The coaster measures 3.75" round. 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 all out!