Pen+Gear Kraft Bubble Mailers provide a protective cushioning when shipping fragile items. Air-filled bubbles lining the inside of the mailer help soften the impact of handling during transit and the Kraft exterior adds an additional layer of durability. Each shipping envelope has a quick and easy Peel and Seal closure—no moisture required. Just pull off strip and press to seal. Keep shipping costs low with lightweight mailers that require less postage than shipping boxes.