They do stretch out mate! They're extremely uncomfortable and tight at first but they will stretch out a decent bit if you go true to size. They actually get pretty comfortable after a while and almost fit like a second skin after a while.
They actually do stretch and loosen a decent bit to be fair. Illithid Dude was right. After about a week and a half or so, they almost feel like a second skin or something. They are surprisingly comfortable after a while!
Fair play mate! Yeah, I'm only making those comparisons because those are the slimmest jeans I have otherwise. Will they stretch a bit to the point where walking up the stairs will feel normal at least do you think??