Luouse Women Elegant Vintage Evening Party Midi Dress (S, Black) 63% polyester The size is not a big size, please read the size chart in the product description carefully ,if you are not sure of the size, one size up is a good idea. 63% Polyester/33% Rayon/4% Spandex Dry Clean Only PLEASE SEE THE SIZE CHART OF EACH DRESS IN THE PICTURE. Designed by Luouse.