I am a teacher and I use sheet protectors for my things as well as for my students to keep their papers organized. This were great! I liked that they were shiny and not matte.
I use the sheet protectors for both our home-based business as well as in the homeschooling of our 4 children and they are great for protecting documents that you either don't want damaged so that you can use them over & over again or for documents that you don't want to punch holes in and damage. I think that the Staples brand sheet protectors are not only better priced but are of much better quality than the named brand of the same product.
I am an older adult in Continuing Education classes. Instructor insists on all work going into sheet protectors. We turn in 3-ring binders for each course. These work well and don't take up too much space. I would recommend these to all.
I do genealogy research & altho' I input to the computer I also like a working copy in my many notebooks...at 1 per family I use a LOT of these page protectors.