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 buy these page protectors frequently for my knitting patterns and my kids school projects. They work great and I plan to keep using them in the foreseeable future.
I created five recipe books containing my mom's recipes which I scanned and inserted into 3-ring binders for family members. The document protectors are perfect for storing these family treasures and can easily be wiped down after cooking/baking.