Rhythm Sierra Floral Double Strap Triangle Bikini Top. Rhythm's exotic Sierra Floral Double Strap Tri Top is crafted from Recycled fabric and features a unique brass tone toggle detail, for a touch of bohemian charm. The adjustable straps and underbust ensure the perfect fit while providing comfort and support, making it the perfect choice for your next adventure. Rhythm recommends this style for A-C cup sizes. Double strap detail at neck tie. Adjustable underbust tie. Removable padding. 95% Recycled Nylon 5% Spandex. Imported.