Knock Knock’s Self-Mailers provide a witty solution for time-pressured correspondents—just complete the blanks to personalize the message and send along to a happy recipient. A charming marriage of contemporary styling and vintage format, Fill + Fold + Seal + Send Self-Mailers are the perfect way to stay in touch.

* 20 diecut, scored cardstock mailers
* Lick-and-stick adhesive
* 7.675 x 10.75 x 0.25 inches