I’ve been buying and wearing the “original” 501 shrink-to-fit button-fly Levis for almost 55 years now! Though I have gone up a couple of inches since my first pair I bought when I was 13 years old — !!! IN FACT, I wore original 501 shrink-to-fits to the Reno Air Races just last month! :^)
Correction ... make that almost 45 years ... I’m not THAT old .. yet!!!
I hear the warranty on 501’s is no longer honored. I knew cowboys who only wore 501’s because they could take them back in when they were worn out and get a new pair free.