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Measuring Your perfect fit in 3 simple steps
To accurately measure your anatomy for a CB-X chastity cage, you will need: A fabric measuring tape, a ruler, and a few minutes of privacy.
Pro Tip: Take this measurement 2-3 times throughout the day, and on different days to account for natural variations in size.
Step 1
Length
Ensure your penis is completely flaccid (not erect or semi-erect) before measuring.
Using a ruler or fabric measuring tape, start against the pubic bone at the base of the shaft and measure out to the tip of the penis head.
Record this length measurement.
Step 2
Girth
Wrap the soft measuring tape around the midpoint of the penis shaft.
The measuring tape should fit snugly but not too tightly, completely encircling the shaft.
Record this circumference measurement.
Step 3
Base Girth
Starting at the base of your penis, wrap the soft measuring tape around and underneath the scrotum (creating a circle around your entire package.)
Position the tape close to the skin and pull taut under the scrotum, where the base ring will sit.
Record this circumference measurement.
Why Proper Sizing Matters
- A properly fitted chastity device should:
- Allow comfortable wear throughout daily activities
- Decrease the frequency of full erections while wearing
- Stay securely in place without excessive movement
- Not cause pain, circulation issues, or skin irritation
- Allow for proper hygiene and urination
Selecting a CB-X Chastity Cage
Using your measurements, estimate the ideal cage size for your anatomy with the calculator provided below.
Your measurements
Shaft diameter
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Base diameter
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Disclaimer: This recommendation is based on averages and anatomy varies. We can’t guarantee a perfect fit, but we’re committed to helping you find your best one — contact customer service if you’re unsure.
Your recommendation
Enter all three measurementsYour matching cages and ring size will appear here instantly.
Note: This Size Guide is provided for informational & educational purposes. Individual results may vary based on anatomy and fit preferences.
Chastity Cage Comparison Chart
I.D = Inner Diameter
| Mini-Me (XXS) |
Cage length: 1 ¼ inch (31.75mm) |
I.D.- 1 ⅜ inch (34.92mm) |
| Mr. Stubb (XS) | Cage length: 1 ¾ inch (44.45mm) |
I.D.- 1 ⅜ inch (34.92mm) |
| CB-6000S (S) | Cage length: 2 ½ inch (63.5mm) | I.D.- 1 ⅜ inch (34.92mm) |
| CB-3000 (M) | Cage length: 3 inch (76.2mm) | I.D.- 1 7⁄16 inch (36.51mm) |
| CB-6000 (L) | Cage length: 3 ¼ inch (82.55mm) | I.D.- 1 ⅜ inch (34.92mm) |
| The Curve (XL) | Cage length: 3 ¾ inch (95.25mm) | I.D.- 1 ½ inch (38.1mm) |
Additional Sizing Considerations
Fine-tuning Your Fit
Each CB-X kit features components with precise design for an effortlessly inclusive and customizable chastity experience.
Mini-Me® (XXS)
1¼" - Extreme Restriction
Our smallest model for advanced users seeking maximum restraint. Ideal balance of intensity for extreme play and comfort for daily wear.
Mr. Stubb® (XS)
1¾" - Advanced Restraint
Significant restraint with a focus on security and comfort. Perfect balance between intense restriction and wearability for everyday use.
CB-6000S® (S)
2½" - Popular Compact Choice
Best-selling compact model offers the perfect balance of confinement for daily comfort. Ideal for beginners or users with compatible anatomy.
CB-3000® (M)
3" - The Original Classic
Our pioneering design and standard for chastity cages with innovative features prioritizing ventilation and comfort for long-term wear.
CB-6000® (L)
3¼" - Worldwide Bestseller
Our most popular model, ideal for beginners and experienced users. Balancing secure confinement and comfort for everyday wear.
The Curve® (XL)
3¾" - For Larger Anatomies
Designed with a natural curve and wider diameter to accommodate well-endowed wearers without compromising security.
12-Hr Test
For new users, we recommend wearing your device for up to 12 hours to assess the comfort of your chastity cage before committing to extended periods of wearing. The 12-hour test will help you determine if you've found your perfect fit.
Common Sizing Questions
If you fall between two cage lengths, consider:
- Your experience level (beginners may prefer the larger option)
- Your desired level of restriction
- Your comfort priorities for long-term wear
Weight changes primarily affect the fit of the U-ring rather than the cage itself. You may need to adjust your U-ring size while maintaining the same cage length.
If you experience significant size differences between flaccid and erect states:
- "Growers" may want to choose a slightly larger cage than their flaccid measurements
- "Showers" typically find that their flaccid measurements align well with our sizing chart
Your chastity device should fit snug and secure without causing discomfort or restricting blood flow.
Due to the added weight while wearing a chastity cage, you may experience ball stretching. We recommend removing the cage if the fit or weight causes (non-consensual!) extended discomfort or pain. If you experience skin chafing while wearing your device, this can be alleviated with a skin-safe lotion or moisturizer.
Still have questions about sizing?
Our expert team is here to help. Contact us at customerservice@cb-x.com, complete a contact form, or utilize our Live Chat feature for immediate assistance.
