Pendaflex Products - Pendaflex - ViewFront Standard Pocket Poly Booklet Envelope, 11 x 9 1/2, 4/Pack - Sold As 1 Pack - Moisture resistant polypropylene. - Horizontal, file-style orientation. - Full-sized back pocket. - Elastic string and riveted button closure. - Moisture-resistant polypropylene. Horizontal, file-style orientation. Full-sized back pocket. Elastic string and riveted button closure.