Ekouaer Womens Professional Athletic Unitard Backless One Piece Swimsuit Shell with 82% Nylon/18% Spandex;Lining with 95% Polyester/5% Spandex Sporty, contrast side splicing creates slimming illusion Wireless Molded cups lift your breast,Cross straps Full lining,sexy, tight, backless, high elasticity Note:Please use Amazon Women's Athletic Clothing Size Chart and The Last Picture to select size