Not all envelopes have flaps you know…some dress up as boxes or perhaps these are boxes with envelope envy. Anyway, be kool, use these Pool A2 Box Mailers for your next big do. Take your creativity to new depths (1″ to be exact). Great for over the top invitations, big announcements, favor boxes, gifts or your tooth fairy collection. Size – 6 1/8″ x 4 3/4″ x 1″. $2.25. Buy here.