Accommodate letter size files and documents,13 separate pockets in transparent colors help classification,string-closure design protects documents from falling out,retrachable hanging hook makes it 2-way of uses for hanging file or a file folder,can be expanded within 5.5" and can hold up to a capacity of 300 sheets,free index label sticker included in the package.Extension of the file can store multiple items, papers, bank statements, receipts, coupons, s, etc. It's perfect for home, office, school use, make your work more relaxed and enjoyable.