ManCage

The Man|Cage Chastity Cage gives the key-holder optimal power over sexual gratification. 

Control or be controlled, that’s the question.
A male chastity cage is a device that “locks” the wearer’s penis inside. It prevents the wearer from getting a full erection, which means masturbation, sexual intercourse, or other sexual activity are off the table until their key-holder says it’s OK to do so. 
Because chastity cages literally cage the wearer’s penis, it’s important to ensure that you know exactly how to use it and remove it quickly, if necessary. Otherwise, you could end up on the Doc’s table.
“The aim of male chastity is to embrace and savor the journey towards orgasm, When choosing a restrictive device, always do your homework first; make sure it’s from a reputable company and that the male chastity device is safe.”

Before you decide on which chastity cage you’d like to try out, you should consider:
Penis sizes. Measure the penis size when it’s fully erect and again when it’s flaccid. Both measurements are essential when we’re discussing a literal cage.
Scrotal circumference. Be sure to measure the circumference of your balls, too. You don’t want to be uncomfortable!
Do you plan to wear the cage during the day? 
If so, what clothing options do you have that can accommodate your member and the cock cage itself?
Sexual stimulation tolerance level. Don’t push yourself. Start slow! “Beginners will need to build up their tolerance, so start with short stints,” Someone says. “Wear the male chastity device for a few hours at a time; slowly start to increase the amount of time you wear it, and you should find you’ll be able to go a few days with it on, But NEVER  wear chastity devices for multiple days straight away. You need to break into it slowly.”