Cock Rings
Cock rings come in multiple variations with multiple attachments to heighten your pleasure even further.
A cock ring makes your erect penis harder and bigger, keeping it engorged with blood which both delays and heightens your orgasm. Cock rings work by restricting blood in the penile shaft so you can go the distance. When you finally do ejaculate, the sensation will be much more intense than normal.

To measure for a cock ring? Take some string and slip it behind your balls, then pull it up around the top of your penis, at the base where it meets your body. Mark the string on both sides where it comes together at a snugness that's comfortable for you;:

That will give you the circumference.
Now take that number and divide it by 3.14 and that will give you the inside diameter in inches
Then use the table below to convert the inches to millimeters.

Measure a few times to be sure, but remember that if you do order the wrong size we exchange it for the correct size for you no problem at  www.TheChainGang.com .

Glans Rings
Glans Rings fit around the shaft of your penis only and will also restrict blood flow somewhat but also have an additional sensation for your partner as well.
You would measure for the Glans Ring the same way, except only wrap the string around the penis shaft behind the head of your penis.