I like to protect my most valued vinyl records and laserdiscs with outer sleeves. I've never had much problem with that, but over age the plastic has often yellowed, crimped and generally become quite unpleasant. If these Big Fudge protective sleeves will end up like that I have no idea, but I assume I'll be dead when that eventually happens, and as such I don't give a rat's ass about it. For now I'm very happy with these. They're transparent, crystal clear, wrinkle free and they hold everything from 12" maxi singles up to triple gatefold laserdisc releases, quite thick. No problems whatsoever.