PVC Corset, Double Steel Boned Corset, Waist Trainer Hourglass Underbust Black Corset. Underbust - Waist - Hip and Corset Lengths (if necessary). Heavy Duty, Steel Boned Corset. This Fashion Corset used in Clubbing, Cosplay, Wedding, Party's and Slim Fitting Pants or Skirts are Great with a corset.