These are so great. I keep forgetting how small AussieBum runs and then I order their briefs, only to get them and remember, "oh that's right." But why pay for shipping them back, when I can just get these to you. Not worn. Literally taken out of the package and see they won't fit. They are marked XL. They most definitely are not. lol. They would fit a guy who wears Medium and likes things all kept tight for sports or gym for example. If you were well-endowed you and normally a small to medium, they might also work. Great fabric texture and 85% polyester and 12% spandex mean they'd be fantastic for gym, sports, or wearing slacks. They're pretty dang hot. I wish they fit.