Chastity Sizing Guide

How to measure for a CB-X Chastity Device

It is important to use this chastity sizing guide to accurately measure the penis length and diameter before purchasing a cock cage. To measure yourself for a CB-X chastity device, you will use two items: 

  • A fabric measuring tape
  • Standard 12” ruler

Measuring Length: Using the standard ruler with a flaccid penis, measure from the base of the shaft against the pubic bone to the tip of the penis head. We highly recommend that you take this measurement in “inches”. If you are measuring in millimeters, below is a conversion chart from inches to millimeters for each cock cage.

Measuring Girth: To measure the inside diameter (I.D.) you will need to measure the circumference of your penis. Use a fabric measuring tape and wrap it around the girth of the flaccid shaft, ensuring that the measuring tape is snug, but not pulled too tight. Then divide this measurement by π (3.14) to find your penis diameter. Knowing the diameter of your penis will help when choosing a CB-X chastity device because you will compare it to the inside diameter (I.D.) of our various cock cages.

For Accuracy: Do not take this measurement directly after showering, and/or with an erect (or semi-erect) penis.

Choosing a Chastity Cage

There are two main factors to consider when choosing your chastity device: 

1: Your anatomy size – If you are choosing a cock cage based on your anatomy size, choose the CB-X cock cage that is the closest to your penis measurements. For a first-time chastity wearer, if your penis measurement is identical to a specific cock cage size, you may want to consider choosing the next size up.

2: Your fit preference – Choosing a chastity cage that is identical to your size will result in a very snug-fitting device. Some users prefer a snug fit, while some wish to have more room in their cage. A properly-fitted cock cage should allow you to move through the day comfortably, without allowing a full erection inside of the device.

Alternatively, the male chastity experience you desire may determine the model of the device you wear or are instructed to choose by your Keyholder, regardless of personal size.

Ultimately, you know your body and lifestyle best, so be sure to select the chastity cage that is aligned with your needs.

Chastity Cage Comparison Chart

Mini-Me Cage length:
1 ¼ inch (31.75mm)
I.D.- 1 ⅜ inch (34.92mm)
Mr. Stubb Cage length:
1 ¾ inch (44.45mm)
I.D.- 1 ⅜ inch (34.92mm)
CB-6000S Cage length: 2 ½ inch (63.5mm) I.D.- 1 ⅜ inch (34.92mm)
CB-3000 Cage length: 3 inch (76.2mm) I.D.- 1 716 inch (36.51mm)
CB-6000 Cage length: 3 ¼ inch (82.55mm) I.D.- 1 ⅜ inch (34.92mm)
The Curve Cage length: 3 ¾ inch (95.25mm) I.D.- 1 ½ inch (38.1mm)


For any additional questions on sizing, fit, or general questions, please review our Chastity Tips, and FAQ pages, or use the Contact Form to get in touch.

Shop Chastity Kits

1 of 4