This bikini top has two sides: one is made of Polyester, and the other is made of Nylon. Both of which are Italian-made and recycled. The Nylon side is matte and more flexible than the Polyester side. Bikinis featuring both our signature polyester and nylon fabrics are more flexible than those with only Polyester. Our signature Italian swimwear fabrics are made using regenerated polyester thread from pre and post-consumer waste.This luxuriously soft, yet firm fabric offers bust support for A to H cup. As this piece features shape-controlling properties and high technical performance, please expect it to feel firmer than regular swimwear. AU 12 / US 8 EUC, only warn twice