I bought these for my husband who always wears the UA and N!ke kind. I was certain they wouldn't fit when I saw them because they look like they're in boys sizes, but they fit! He loves them and I love how much cheaper they were. I got him a 2x and they're a little more snug in the groin than the other brands, but otherwise they're perfect he says and super comfy. He's a 40x30 in pants and I got him a 2x.