Seafolly Shimmer Slide Tri Bikini TopThe sliding triangles and straps of the Shimmer Slide Tri Top are easily adjustable, so you can get the perfect fit every time. Sizes on our site are US sizes, but products may arrive with the Australian size tags. You should still be receiving the US size you ordered. Sliding triangles. Lettuce edging. Solid. Ruching detail. Ring trim. Removable cups. Adjustable halter and back ties. 80% Nylon / 20% Elastane. Imported.