The Calvin Klein string bikini bottoms are cut from soft crepe for a refined, tactile finish. A medium-rise waist and strappy sides with metal hardware add a modern edge. Soft-textured crepe. Medium rise waist strappy sides with hardware. Fully lined. Calvin Klein metal detail on the hip. Calvin Klein Underwear, curated by Reiss, is a collection of lingerie, loungewear, nightwear, and swimwear designed to elevate your wardrobe with refined style and superior comfort.