QinYing Elegant Satin Cubwear Boned Corset Body Shaper Bustier 90% Polyester/10% Spandex Hook and Eye closure Beautiful brocade patterns 4 steel bones, others are plastic bones Hooks in the front, lace up in the back, adjustable Hand wash. do no bleach. tumble dry low or line dry or dry clean Our size is 1-2 size smaller than US size, our size chart is shown in the left pictures. If you are not sure about it, please contact us, I'll do my best.