The Inverted Snake Chastity Cage - Tubular Design + Cuff

In a nutshell:

This cage has an openwork, tubular spring design allowing the penis to be partially revealed.

This model is also fully adjustable with the help of an integrated cuff so if you are at all concerned about the testicle ring size, don't be - the cuff will adjust to ensure maximum comfort when worn. 

Unusually, this model is also inverted so as to keep the penis in the position of an erection.

Also called "Jail House Erection + Cuff"

Further product details and dimensions:

Cage: Length - 3.5", Width - 1.5", Circumference: 4.5"
Ring: Fully Adustable with Cuff

Made of chrome steel