These are string kraft paper file envelope, which are made of thick Kraft paper, making them not easy to break and tear down. They have a wide range of applications, they can be used to storage documents, files, invitation cards, etc. Features -Color:Blue -Material:Kraft paper -Size:17.00X11.50X0.30cm/6.68X4.52X0.12in -Made of Kraft paper materials, these envelope file bags will not be easily . -You will receive many Kraft paper envelope bag, which you can use or share with others. -Classic file folder bag design, string-tie closure envelopes help manage forms, records, and other important documents. -Fine workmanship, good details and beautiful appearance ensure its popularity. -Perfect for daily use, such as school subjects, office documents files, traveling files, business cards storage. Package list: 10 x Bags