Billabong Sweet Side Tropic Bikini Bottoms. A bikini with a wink of summer romance, the Sweet Side tops off feminine micro florals with a smocked swim fabric. Featuring an allover mini floral print, the Tropic Bottom is designed to flatter your shape with a slightly slimmed-down seat, offering medium coverage for your bum and a low rise front and back. Flattering fit with medium bum coverage. Low rise front and back. 87% Polyamide/13% Elastane. Hand wash. Imported.