Add mystery to your mail using JAM Paper #10 Open End Foil Envelopes with Peel & Seal Closure. These water-resistant black foil envelopes keep contents hidden and protected, leaving recipients left to wonder what could be inside! Send marketing materials, announcements, invitations, and more knowing your mail will be the talk of the town. This pack contains 25 black foil envelopes. Each envelope measures 10" x 13", has a booklet opening, straight flap, self adhesive strip closure, and shiny finish.Details:Black10" x 13"Water-resistantBooklet openingStraight flapSelf adhesive strip closure25 envelopesFoil