This is a locking chastity cage, similar to others, only this one has an anti-pullout mechanism that makes it very difficult to remove without the key.
We have a hard wooden chair that I like to use for this.
I enjoy leaving the device on him, and tell him to try to have an orgasm with it on no vibrator allowed! I attach the collar around his penis and testicles.
I pick the color, then he massages, moisturizes my feet.
He has taken her from me and cultivated her into his exclusive personal fuck slave.
For added humiliation, I frequently take pictures and video of my pet during these humiliating sessions.