Check out the unique double-pocket outer sleeves designed and sold by Vinyl Storage Solutions in Canada. I learned of them from another Michael, this one the German gentleman known as 45 RPM Audiophile in The Vinyl Community. Details and pics available on the VSS website, and a few YouTube videos.
Record Jackets and sleeves
While trying to slip the Mo-Fi rice paper inner sleeve into it's jacket, a corner folded over. I straightened it out. Folded again. Wiggled it, out, in a few times. Got it. Halfway in, almost. Pull out an inch. Back in, fast. Got it. Looks a bit puffy. Flatten out the air. I'd been talking to my imaginary friend about how awesome vinyl is but now felt uncool after all that effort.
...
All this hassle would have been saved if they had designed jackets to be 1/2 inch bigger.
...
All this hassle would have been saved if they had designed jackets to be 1/2 inch bigger.