2 sisters thought it would be cute to have some fun and send the same birthday card back and forth to each other with note inside for each year. It looks like it worked. The card has been going back and forth for 24 year snow and have been through 8 moves and 3 different states. The notes have gotten so heavy that extra postage is needed to send it. I can barley remember to get cards for people let alone re-send the same one year after year.