Piano Keys Heart Mini DressUsing complex three dimensional pleating techniques, it carefully constructs three dimensional patches, which are just like real black and white piano keys, exquisitely restores the geometric aesthetics of piano keys. The standing seam technology ensures a stiff and close fitting silhouette, with clean and natural cutting lines. Fabric Fabric A: 100% PolyesterFabric B: 100% PolyesterFabric C: 97% Polyester, 3% Spandex Slightly stretchy WASHING Soaking