The Shark Party Greeting Card Puzzle from Mudpuppy is a 12-piece postcard puzzle with an image of ocean friends celebrating a birthday and space to write a message on the other side. Package comes with the puzzle put together, just write the message on the back, break up the pieces, place it in the envelope and mail. 12-piece puzzle Add your own message to the back! Includes color-coordinated envelope and full-color sticker seal Package: 5.25 x 7.25″, 13 x 18 cm Fun for everyone 3+