Seafolly Shimmer Rio Bikini Bottom in Black. - size Aus 10/ US 6 (also in ) Seafolly Shimmer Rio Bikini Bottom in Black. - size Aus 10/ US 6 (also in ) Self: 80% nylon 20% elastaneLining: 88% nylon 12% elastane. Ruffle trim. Back ruched detail. Stretch fit. SEAF-WX388. 40401 281. Seafolly has been at the epicentre of Australian beach lifestyle since 1975 and has quickly become one of the most recognized swimwear and beach lifestyle brands world-wide. Setting the seasons trends and launching summer swim fashion is all a part of the Seafolly ethos. Believing in the Seafolly girl by offering fun, fashion forward and innovative ranges of swim and lifestyle wear has garnered legions of fans and followers.