C-String is known as extremely sexy and daring underwear. C-strings stands on its own for creativity and a unique approach to covering the male private area. This is the perfect piece to shock someone or just to feel amazingly free under your pants. On a more practical level, C-strings are very popular men's underwear for tanning, whether it be in a tanning salon or in your backyard. If you use it at the beach or local pool, you may do more than just turn some heads. Sexy Men's Open Front C-String w/ 3 Adjustable buckle Rings No Line Underwear Thong.