Seal it send it and smile. Flyers newsletters brochures and more stay securely fastened in the mail with these Mailing Seals. Affix the seals to the edge of the pages and the permanent adhesive keeps mailings from unfolding while in transit. The convenient perforated line helps you align and fold the seal precisely and allows your recipients to pop it open quickly. Customize with free templates available at avery.com. Sealing is the smart way to ensure safe mailing so you can smile without worry.