A folder is a tool used to store, protect and regulate paper documents in a business or business process. In modern business activities, it is given the function of image display. It can be used to fill all kinds of paper documents, but it is not limited to this. Materials include PP, PVC, cardboard, and some are imitation leather, cloth and so on. What can be bought in the market is usually based on standard A4 files. There are many categories of folders: single strong clips, double clamps, data books, two-inch clips, three-inch clips, double clips of different specifications, single page clips (also called L folders) and multi-page clips.

11x17 pocket folders takes fashion, lightweight, durable and portable into consideration and is very popular with users.