Natural Self-Seal Cushioned Mailer, #2, Barrier Bubble Air Cell Cushion, Self-Adhesive Closure, 8.5 x 12, Kraft, 100/CartonShip your items safer with a Barrier Bubble lining that retains air better than alternative cushioning materials. Constructed with a natural kraft exterior that doesn't require bleaching or dying to create an "unnatural color" like gold or white. Easy to write on or attach a shipping label. The fully laminated natural kraft and air cellular construction provides outstanding stiffness and puncture resistance. Self sealing.