Material: OPP Size: Thickness 0.03mm x Width 225mm x Length 310mm + Tape part 40mm This size is perfect for A4 size paper, direct mail, and pamphlets. ⚫︎ Can be used as a transparent envelope for mailing direct mail. It has high transparency and gloss, giving it a high-class feel and allowing the contents of the product to be displayed beautifully. ⚫︎ Please note that it will be shipped folded in half.