Peaceable Kingdom Fold-Up Heart 28 Card Super Valentine Pack Give a personalized greeting to your Valentines friends with this Super Valentine Fun Pack Decorate each card with the included stickers to make each greeting unique Then fold up the heart shaped card into its own envelope, seal with another sticker and you are ready for party fun Enough cards in one pack for most school valentine exchanges For ages 4 years and older; Peaceable Kingdom packaging is all designed to be frustration free - naturally!