Mature Metal

Guide to Measuring Your Penis for a Chastity Device

This is only a guide. All order measurements are the decision of the buyer.  If you have any questions please contact us at

Measure yourself when flaccid and at your smallest. The correct measurement is when you are at your smallest, but NOT when you are “shriveled up”. You know the difference. Wait 2 hours after showering or swimming before taking any measurements.  I suggest taking several measurements at different times until you’re comfortable that you have an accurate measurement.

You can be a little off and it will still work just fine so don’t worry, just take a reasonable measurement when you’re at your smallest.

On length, Take a ruler and measure under and at the base of the penis where it meets the testicles and measure to the tip of the penis. Again soft not shriveled. Then take your shortest measurement and subtract 1/4″.

For the inside diameter you can purchase a set of sizing rings. Or if you are currently using a CB series, we can use that as a guide for diameter of the base ring and the inside diameter of the cage.  This measurement can never be adjusted.

On the gap there is not good way to measure. 90% of the customers order the 3/8″ and are happy with it. Some who have been in chastity for sometime want the 1/4″ as they have stretched the scrotum. Others who are new to chastity and have high and tight scrotum want  the 1/2″.  If the gap is wrong after you receive it, it is an easy fix.

If you have any questions, please contact us.

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