From the Frankie’s website: This skimpy triangle top features adjustable over the shoulder ties ensuring a customizable and comfortable fit. Designed with a new Green Glow color-way and our signature SoftSwim fabric, the Lumia bikini top is sure to add a splash of color to your beachside ensemble. 80% Nylon + 20% Spandex SoftSwim Fabric Adjustable over the shoulder ties Fits true to size but is intended to be skimpy.