Cages are some of the largest items of bondage equipment, and provide a “space” of confinement. Cages display the captive, in their vulnerability. Cages for use in bondage scenes are typically constructed of wire mesh, or steel tubing or bars. One of the important uses of cages is to provoke feelings of psychological submission as the captive struggles against the bars, and then reaching the state of helplessness is convinced of their inescapability.