Cock Ring Stack It Clear

The Stack It sex ring from Perfect Fit brand is a silicone cock ring that is part of what is called "Donut Cockrings".
In fact, this one is small in size (4cm wide) with a very narrow inner diameter, which is the characteristic of this kind of gay cock ring.

The small diameter allows you to completely enclose the base of the sex and cause a swelling effect of it.
It increases the power of your penis and makes you hold the erection for a long time.

Stack It means in English: "Stack it!"
So you can postion several and thus increase the pleasure and use it as a gay ballstretcher.