This full tank with built in bra let you move confidently and comfortably during your workout. It comes with soft and stretchy lacy front and back for better breathability. The tank shape is a line with curvy bottom to make you look slimmer. Outer layer : 92% polyster melange 8% elastic. Lace : 77% nylon 23% elastic. Inner Layer : 88% polyster 12% spandex.