Jiffy Rigi Bag Mailers are made with an extra-rigid kraft-laminated fiberboard construction that effectively resists bending and folding while providing superior edge and corner protection. These 9-1/2" x 13" mailers are the perfect way to ship books photography and other low-profile items that require rigid mailing protection. Stiffness allows quick easy product insertion. High-strength cohesive self-seal provides a secure closure and speeds up a packaging operation. Tear tape in the flap facilitates easy opening. Natural kraft has a premium appearance and provides an excellent surface for custom printing. Mailer contains a high percentage of recycled material so they are 100 percent curbside recyclable.