Demonstrating definite athleisure influences, <a href=" http://www.selfridges.com/GB/en/cat/calvin-klein/" style="text-decoration: none"><font color="black"><b>Calvin Klein</b></font></a>&#39;s <b>Intense Power bikini bottoms</b> are defined by a bolder take on the American label&#39;s signature branding to the back. Sitting low on the waist with self-tie sides for a custom fit, they translate the ever-relevant nostalgia for 1990s styling straight to your swimwear collection. Complete the look with the matching bikini top and pool slides.