Just going out on a domination limb here, but when you're in the mood to rule over your partner's cock, you'll probably want a tool that won't just give you a little control but A LOT of it. Maybe something in hygienic, super-sturdy aluminum? Send your sub straight to jail with Lockmaster's Prisoner Cock Cage.

This firm, no-nonsense Cage fully restrains their shaft and tip in classic silvery bars, leaving a pee-friendly opening un-confined. You'll lock it up tight to a ring looped behind their balls before letting them say bye-bye (if you feel generous) to the cock you now own.

A key for the included padlock is included - keep it (or make sure your keyholder keeps it) in a safe place.

The Prisoner's slick, nonporous surface is easy to clean and care for. You can wash it well with soapy water, use a favorite toy care formula, boil it, or run it through the dishwasher. 

*The Prisoner is about 3.75"/9.5cm tip to ring. It tapers from approximately 1.5"/3.8cm (inner diameter), and the ring is 2.75"/7cm wide