ITOYA's SpringPost Binder™ is a large capacity storage and retrievable binder. Fits any standard bookshelf. Sheets refuse to tear unlike a 3-ring binder. Retrieving data is quicker and easier compared to standard binders. Each binder has 5 interchangeable color-coded spines and 5 tabbed dividers. Covers are made of heavy duty water-resistant vinyl. Great for storing invoices, flyers, directories, price lists, important records and documents.