Seafolly Radiance Bikini Bottom in Slate. - size Aus 8/ US 4 (also in ) Seafolly Radiance Bikini Bottom in Slate. - size Aus 8/ US 4 (also in ) Self: 92% nylon 8% spandexLining: 90% nylon 10% spandex. Stretch fit. Imported. SEAF-WX438. 40546 S636. 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.