I saw these undies online and had to share. The N2N B2 Black Sport Brief is made from nylon & spandex to give you that stretchy leather/rubber look. And it also apparently “clings to your body and every bump and curve therefore showing off every part of your body”, which might explain the bulge on this model. Sorry, I know it’s not that noticeable, but if you look carefully at the guy’s package you might notice a slight “bump” showing off some part of his body.