Primal cock rings are ergonomically designed for comfort and performance.

Sizing Guide

How to Measure for the Perfect-Fitting Cock Ring

Gather Your Supplies. You'll need a piece of string and a ruler to get your measurement. We recommend using a string instead of trying to use a soft tape measure.

Measure. Wrap the string around your penis and behind your balls. Mark the string where it meets. You want the string quite snug. You should be able to just fit a finger between your skin and the string when you're soft. And it should be comfortably tight when you're hard so that you can't fit in a finger. You may want to measure both soft and hard to double-check your size.

Determine Your Size. Measure the distance from the end of the string to the mark.  This is the circumference.  Use the handy table below to get your size.

Circumference Ring Diameter
13.0-14.5cm
(5.0-5.75in)
40mm (~1.6in)
14.5-16.5cm
(5.75-6.25in)
45mm (~1.8in)
16.5-18.0cm
(6.25-7.0in)
50mm (~2.0in)
18.0-19.5cm
(7.0-7.75in)
55mm (~2.2in)

 

Tips For Measuring

  • Most guys are in the 40mm-50mm range.
  • 55mm is a pretty big ring. So if you're not bigger than average, try measuring again and make sure you pull the string tight.
  • If you have a good-fitting round ring, MEASURE ANYWAY. You may find your Primal ring size is 5mm (~.2 in) smaller than your round ring size. Our keyhole shape fits a bit looser than a round ring with the same diameter.
  • Measure twice!  Due to the intimate nature of these rings, we can't accept returns or exchanges.

Find Your Perfect Ring

See all our rings
Primal:Fusion Cock Ring in Matte Stainless Steel Primal:Fusion Cock Ring in Matte Stainless Steel
$39.95

Designed with a narrower, curved band for amazing comfort.

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Primal:Spark Cock Ring in Stainless Steel Primal:Spark Cock Ring in Stainless Steel
$29.95

The narrowest ring in our lineup. Perfect for guys who prefer a bit less bulk.

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Primal:Spark Cock Ring in Glossy Black Stainless Steel Primal:Spark Cock Ring in Glossy Black Stainless Steel
$29.95

A narrow ring in a striking, durable black finish that's sure to grab attention.

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Primal:Energy Cock Ring in Stainless Steel Primal:Energy Cock Ring in Stainless Steel
$49.95

Our best-selling ring. Features a medium-width, flat band for a solid grip.

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