Bubble Cushioned Kraft Paper Envelope Surface is easy for writing, bubble linings prevent shock, pressure, collision. Bubble Cushioned Kraft EnvelopeProduct:1) Made of Kraft paper with bubble linings. 2) Superior cushioning and surface protection. 3) Many colors and designs available. 4) Self-adhesive tape available. 5) Customized designs and shapes are welcomed. 6) Clean and easy to use. 7) ...