These say on the box "archival quality" which I would say is debatable. They aren't as crystal clear as I had hoped so I couldn't use them the way I originally planned (to protect signs I was putting up). My backup plan was to use them to store old family papers but then I tried rubbing the inside of the sleeve with a cloth to see if any of that haze was going to rub off on my antique documents and discovered that yup it was. I'm either going to return them or give them to my daughter or grandkids for their schoolwork or artwork. They're of no use to me.
I bought this pre-maturely before I realized I just bought a package of 100 pieces when I purchased a 200 package for $18.00. Just wondering if I can get a $5.00 gift certificate for my loyality.