The Mini Pattern Envelope Card Set is a cute and useful card set! Each style contains 5 foldable cards with varying adorable outer and inner designs. After writing a short message inside the card, fold the card along the lines to turn it into a cute envelope! Please note that the cards in the set is not mailable on its own. The Mini Pattern Envelope Card Set is a convenient and lovely way to deliver your greeting, gratitude, birthday wishes and heartwarming messages to your loved ones! Please check out the photos for more details.