The bustle cage is designed to shape your Victorian bustle dresses at the back. This bustle cage also provides train support by pushing your beautiful trains out back for lots of drama.
The waist measurement is high on your natural waist not where your jeans would sit.
The cage is shown in the pictures with 7 hoops. Seven hoops provide great support from the mid-thigh area to the hemline area of the dresses. Also, as an example, you can see a small bustle cage in the 5th photo. It was a custom order from satin with 5 hoops.