Men’s bikini underwear Men’s underwear made from rayon knit Machine wash Imported Introducing the Body Tech Core Bikini for men: exceptional comfort with a stroke of brilliant style. Body Tech elevates everyday basics to a new level of luxury with this men's bikini underwear, made from silky rayon knit, enriched with touchable texture and subtle luster. Fashionably finessed with jacquard-stripe knit trim and a bold Body Tech logo, the Core men's bikini underwear is an essential addition to any guy's top drawer. The bikini also features a double-layer pouch with contoured seaming that enhances the fit.