Cock Ring Sizes: Find a Fit That Makes Your Dick Throb

When a cock ring fits, you know it. Your dick feels heavy, thick and extra sensitive, every thrust has a bit more behind it, and you catch yourself looking down in admiration. When it doesn't fit, it either falls off in the sheets or leaves you hoping nobody needs to call anyone.

Sizing is easy once you know what you're measuring. And forget the ego trip. Nobody gets a prize for squeezing into the smallest one on the shelf.

First, where's it going?

A ring at the base of your shaft fits differently from one that goes around your cock and balls together, and a measurement for one tells you nothing about the other. Choose the position first, then the number.

Can't decide? The Maia Cooper is a stretchy liquid silicone dual ring that holds your shaft and your balls at once. It's a very good way to find out how much you like having the whole package held up and on show.

Diameter goes across, circumference goes around

This is where most people cock it up. Diameter is the distance straight across the opening. Circumference is the distance around it. A ring with a 40 mm internal diameter isn't made for a 40 mm body measurement, and buying it that way is one hell of a mistake.

To work it out, wrap a soft tape around the spot where the ring will sit, without squeezing, and measure the way the ring's size chart asks. For a true circle, dividing the circumference by about 3.14 gives you the diameter. Measure when you're hard if that's when you'll wear it. It's the most fun anyone's ever had with a tape measure.

That number's only a starting point, because stretch, shape and placement all change the fit.

Stretchy, adjustable or rigid?

Stretchy rings: soft, forgiving and cheap enough to try a few. They still vary a lot in firmness, so look for pressure you enjoy, not a dare.

Adjustable rings: these are the easiest to get right, because you set the tightness yourself. Start loose and take it up a little at a time.

The Pinnacle Pro AnyFit lets you adjust the pressure to suit how you feel on the night, which is handy when you don't yet know what you like.

Rigid rings: metal looks hot and feels weighty, but it doesn't give at all. You need an accurate size and an easy way of getting it off. Stuck between sizes? Don't go smaller. Get an adjustable.

How you know it's right

It should feel snug and secure, with a pleasant fullness and no pinching. You shouldn't have to spend the first five minutes negotiating with a trapped bit of skin.

If it hurts, or your penis goes numb or cold, swells a lot or changes colour, get it off. A stuck ring needs urgent medical help. Even a perfect fit isn't for wearing all night, so read our cock ring safety guide for time limits.

Then go for the fun extras

Once you know your fit, play around. The Maia Axel adds two metal balls for some extra weight and a firm grip, and a vibrating ring can give your partner something to grind on.

Now grab the tape measure, and maybe ask someone nice to help you hold it.