4.25" x 5.55" includes envelope we all should have a variety of thank you notes on hand to acknowledge those special favors and gifts that brighten our day. Sassy, sweet or something in between, choose a design and let your graciousness shine through! as a special bonus, if you buy 5 sets of any foldover, notecard, gift enclosure, mommy card, recipe card or calling card, you get a FREE 6th set!