I ordered the Vital 1.0 version of these shorts and really like them! I have been looking for a dupe for the Gymshark Vital 1.0 shorts because they are my FAVORITE, and unfortunately Gymshark no longer makes them (the Vital 2.0s were not even close to an upgrade, they make your butt look like a baby diaper bum and I truly have been rage-pissed that Gymshark would ever change the most perfect shorts in the world for something so... blah.)The 1.0 version of these shorts are very close to the Gymshark Vital 1.0. They are a similar fit, equally thick, squat proof, and just the right length to have some coverage OR crank 'em up and show off your assets! The only difference that I can find, and the reason I gave them a 4 star instead of a five is that the inseams in the underneath side of the shorts have a larger gap between them. I have uploaded a picture for reference (the grey shorts are a M GS Vital, the green are a S AoxJox 1.0 version). This may not seem like much, but it's enough that I cannot "hide" those seams when I squat or bend over. It does look a little weird in my opinion!However, all that to say I do like them, and they are the closest to a GS Vital 1.0 dupe that I've been able to find.For size reference, I am 5'8, 150 pounds, athletic build (US size 4-6) and I ordered a small because I like them TIGHT (and even in a small, tighter fit they're still squat proof). A medium for sure would have fit as well, just would have been looser in the waist I imagine.