I make a lot of scrapbooks and they fit my needs perfectly. They are heavy enough and don’t tear…yet they are lightweight enough to see pictures and writing through them easily.
The Staples Medium Weight Sheet Protectors are very good when it comes to protecting documents from smudges rips and fingerprints. I use them often when making copies of office machine manuals for different departments to keep our office equipment and other machines in good running order. The sheets fit easily into a binder keeping them reachable in a bookcase or on a shelf.
I have spent a fortune on these! I use them to protector my needlework patterns my journal writings etc. I prefer keep my paper clean and hold-free than punching holes and the corners getting bent.