We offer a large selection of Stayflats Mailers. You can search many types of Dura-Bag Flat Mailers, Eco-Shipper Flat and Expandable Mailers, Jiffy Rigi Bag Self-Sealing Mailers, Media Mailers, Stayflats Mailers, White Corrugated Audio / Video Boxes and White Corrugated CD / DVD Box. Dura Bag Flat Reinforced Mailer is fiberglass strands laminated to kraft paper create tough mailers that resist tears and punctures. Lightweight to reduce shipping cost. Dura Bag Expandable Reinforced Mailer is fiberglass strands laminated to kraft paper create tough mailers that resist tears and punctures. tayflats plus peel-and-seal mailer is a thick clay-board that resists bending. Attractive, extra-rigid mailers help prevent bending and creasing of photos, proofs, artwork, and diskettes during shipping.