1. Selected PP Material for Waterproofing and Durability: Made of 0.07 inch (0.18 mm) polypropylene material, soft texture, anti-static, resistant to deformation, waterproof, so you can securely protect important documents even in rainy weather. Clear file set with 5 colors. You can use it for managing documents by color or separating them from personal use to company. Colors make it easy to organize files in your office or school. 2. Semicircular Cut for Easy Use: In order to facilitate opening clear files, the semicircular cut is inserted in the top of the clear files. Holds documents in place and protects them High transparency allows you to clearly see your important documents. Not only does the clear holder help you organize your documents, but also when you want to carry your documents neatly without creases or messes. 3. Sturdy and Stable: The clamps on the rails are strong and will not fall off even with a single piece of paper. Perfect rail file for A4 size files. Slide bar for smooth file storage. 4. 【Widely Used】Store A4 copy paper. Also useful as a protective cover for distribution, submissions and mailings. They are also commonly used in school and home subject-specific printing organization, contact books, and notices. Other items are used to hold manuals, **and receipts, ticket stubs, postcards, stationery, envelopes, stickers, and document categories. High transparency allows you to see the contents of your files at a glance. 5. [10 books with A4 sliding rail file] Material: PP Size: 12.2 x 8.3 inches (310 x 210 mm); Compatible Size: A4 Package Includes: 10 x Rail File A4 x 10 x Label. It will protect your important documents well. Great for documents, instruction manual and much more.