[vel0city]

Levi's jeans does have pretty consistent styles and has model numbers that haven't changed their main style identity for decades.

But, I swear the different factories will often produce slightly different cuts. I used to buy 517's all the same size, and depending on which country of origin they'd all just fit a bit differently. A little tighter here, a little looser here, but all for what are supposedly the same measurements. Some enough out of whack I refuse to wear them. I don't bother trying to get the exact same anymore.

But I do have to say they have definitely come closest to actually keeping things pretty much the same across time. I can't really say that for any other mass market clothing brands which don't include custom tailoring.