Men’s bikini underwear Polyester/spandex Hand wash Blue Line style BLM022 Put a ring on it. Blue Line ring men’s bikini underwear create a fresh new look that captivates the imagination. Offering a sexy gathered front with a modern O-ring design and minimalist side coverage, Blue Line men’s bikinis are equal parts fun and comfortable. Destined to be a favorite, these men’s bikini underwear from Blue Line are crafted from soft and stretchy fabric for a superior fit. Try one in every color.