Zeal X Printed Honeycomb Paper Mailers are all made of paper materials, can be mass-produced, short production cycle, excellent strength and stiffness, light weight, saving freight. The W-shaped corrugated paper internal structure provides greater impact protection than standard bubble mail better protection during transportation, by varying the thickness and gram weight of the core paper, corrugated liner envelope bags can be obtained with different strength and stiffness. They are 100% recyclable envelope bags and are FSC certified to protect fragile items to their destination, making them the best choice for protecting your goods in transit. Suitable for packaging motor and auto parts, aluminum products, fragile products, glass products, lamps, cosmetics, shoes, clothing, electronic instruments and electronic products ect.