I use the protectors for safekeeping photographs family papers and assorted documents as well as for copies of greeting cards I create. The sheets are acid free just what I need for protecting important documents.
I use these to protect Archives for a Veteran's Organization. Some of the documents are 90 years old. These are the perfect protection without causing wear or harm to these documents. The ONLY drawback is that once in a while you must use two hands to separate the sheet to slide in the document.
Have used sheet protectors to put the press clippings I get for my clients into a three-ring binder for presentation either at the end of the campaign or when the binder is full. Clients love the organized press all in one place. No contest between clear vs. the matte finish for me anymore... clear and shiny like these are the best.