Laromcy Women Lace Corset and Bustier for Waist Training[FBA] The string on the back is adjustable, please try to adjust it to be more fit for your body. Shipping by USPS, usually takes 7-15 business days. Fully adjustable criss cross ribbon laced back, please try to adjust it to be more fit for your body. 2 Pieces, including 1 Corset, and 1 Matched G Strings Material: Cotton