TOP QUALITY MATERIALS: Our Expanding file folder is made from durable wipe-clean polypropylene. Acid-free and high-quality for using trustingly. Waterproof & sturdy enough to keep the file organizer from collapsing. .DIMENSIONS OF THE EXPANDING FILE FOLDER: 13'' L x 9.25'' H. Each pocket fits well for all A4/Letter size paper. There are 24 pockets allow you to store more than 4000 sheets of paper documents. .HANDY ORGANIZATION AND EASY TO LOOK: With the colorful label on the top of each pocket, it is easier to find the papers what is needed which can make your working more effective. .MULTI-FUNCTIONS: You can keep your documents, vouchers, paper, cards, receipt, painting work and coupons etc. This expanding folder makes your desk tidy and well organized. .EXPANDABLE DESKTOP FOLDER: Folders can be expanded to different widths due to the numbers of files you put into. Stand on its own on the desk and not easy to tip over when pulled out to maximum capacity and filled. Each pocket is completely sealed at the bottom to keep small objects do not move. .