If you've ever ended up having to stop what you are doing to search for that one missing piece of paper, these Universal Project Folders are for you. They hold about 10 - 15 pieces of normal size 8 1/2 x 11 paper, maybe a few more at a stretch. And they are clear so you can see what is in them without having to open them up. So you can just put all your documents for each project you are working on in a separate folder and then easily find them when you need them.The folders are sturdy, but still relatively flexible, and fit nicely in my briefcase. I also like that they are only closed on two sides - this is enough to keep papers from coming out easily, but also makes it easy to put papers in. I had previously tried some of those "slip-in" plastic sleeves for three-ring binders that are closed on three sides, and only open at the top, and I found it hard to slide papers into those, and sometimes hard to slide them back out too. So I like the two-side closure of these Universal project folders a lot more.All-in-all, these are great folders, and I have no complaints about them, other than that they are a teeny bit expensive. But they are well worth it!