Used for numerous kinds of articles, when you talk about mens sheer underwear, you can expect nothing but everything to be quite clearly below the belt. The sense of using diaphanous started back in the 1560s. If you take a look at the meaning of term sheer, you would find it be “a very fine or diaphanous fabric or article” to be exact.
Men's See Through Underwear What is a mens sheer underwear?
