Underwear, for men, is really all about comfort. That is why, more than appearance, some will look at fabric as the most important factor for choosing undergarments, followed by style of cut: boxer or brief, etc… Mens underwear is available in all sorts of fabrics, including nylon, which is considered by some to feel best against the skin because it is thin, lightweight and stretchy.
I like the look of these – simply white:
Nylon underwear for men pictured: ExOfficio Men’s Give-N-Go Brief, white
The thin-ness of nylon may be important to men who wear tight pants. The idea is that the thinner the underwear, the less they will bunch up the pants, and the better they will look. If this is the case for you, you may want to look into seamless underwear, which is made especially to avoid any ridges or bumps showing through your pants.