Details Meet the Billie. Our newest halter bikini top. With a neckline that goes on for days and versatile adjustable cups, you're bound to get double takes in this one! Features Blackbough's unique mix of 80% nylon and 20% spandex combines the properties of both materials to create a velvety, silk-like fabric which caresses and protects your body the way it should be while you're out basking under the radiant sun. Our suits will make you feel what a cozy hug is really like. .Smocked swim fabric .Adjustable cups for custom coverage .Halter neckline .Tie-back .Non-padded but triple-lined to ensure your suit isn't see-through even after your swim .Made with Blackbough Swim's signature seam