I have used these to organize my papers in various ways. Sometimes I will put one manufacturer's particular paper line (or collection pack) in it until I have whittled the papers down and just a sheet or two remains. I have also used it to put coordinated papers from several companies in, organizing them into a kit (or the precursor of a kit - since bulky embellishments will not fit in here.) I have at least a dozen of these - great product.
This paper file is very durable, and will hold lots of pages. It advertises that it will hold 40 sheets, but I have stuffed more than that into it. I use it to store pages by color family. Very good for organization.