This Deluxe Black Patent Steel Boned Corseted Dress is crafted of high quality Patent/PVC fabric and features 10 spiral steel bones and 4 static steel bones in the back for a secure ultimate fit. The underwire and nickel brass grommets with laces give an adjustable cinching and slimming effect, while the cotton twill lining ensures comfort and breathability. The perfect combination of style and fit. Hand wash only.