Uh this is tricky but men have something in front they use to go to the restroom and underwear especially boxers have some kind of opening to accommodate that. For some reason these lack this important feature.
I have to say that 2 out of 3 gets you 4 out of 5. 2 of the 3 pair in this pack have got to be the most comfortable underwear I've ever worn. The 3rd pair has got to be a different size all together. I can't get them over my butt they're so small. I'd absolutely love to have about 5-6 more pair like the ones that fit. I'm serious about how comfortable they are.