Finding Your Perfect Fit

Choosing the best-fitting chastity cage is crucial for secure confinement and comfortability. A poorly fitting chastity cage can cause discomfort, chafing, and the risk of unintended removal- none of which deliver the ultimate chastity experience that you desire.

With over 25 years of expertise as the original chastity manufacturer, crafting premium modern chastity devices, we've helped thousands of customers find their ideal fit. This detailed guide is designed to assist you in selecting the best CB-X chastity cage for your unique anatomy and/or desired experience.

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

Measuring Your perfect fit in 3 simple steps

To accurately measure your anatomy for a chastity cage, you will need: A fabric measuring tape and a few minutes of privacy.

Measure your length

  1. Ensure your penis is completely flaccid (not erect or semi-erect)
  2. Using the ruler, measure from the base of the shaft (pressed against the pubic bone) to the tip of the penis head
  3. Record this measurement in inches for easy comparison with our sizing chart
  4. For Accuracy: Do not take this measurement directly after showering, and/or with an erect (or semi-erect) penis

Pro Tip: Take this measurement 2-3 times on different days to account for natural variations in size.

Important: Never measure immediately after showering or when semi-aroused, as this will result in an inaccurate measurement.

Measure Your Girth

  1. With a flaccid penis, wrap the fabric measuring tape around the middle of your shaft
  2. Ensure the tape is snug but not tight (touching the skin all around without any slack)
  3. Record this circumference measurement
  4. Divide this number by 3.14 (π) to calculate your diameter
  5. Compare this to the Inner Diameter (I.D.) measurements in our sizing chart

Example: If your circumference measures 4.3 inches, your diameter would be approximately 1.37 inches (4.3 ÷ 3.14 = 1.37).

Measure the Base Circumference

  1. Place the measuring tape around the base of your penis AND scrotum together
  2. Position the tape as close to your body as possible, and taunt under the scrotum, where the base ring will sit
  3. The tape should be snug but not restricting
  4. Record this measurement

Calculate Your Ring Diameter

  1. Divide your base circumference measurement by 3.14 (π)
  2. This gives you the ideal diameter for your base ring
  3. Compare this result to our U-ring size chart below

Example: If your base circumference measures 6.0 inches, your ideal U-ring diameter would be approximately 1.91 inches (6.0 ÷ 3.14 = 1.91).

Note: If your calculated diameter size exceeds 2", consider purchasing our Large or XL u-ring separately.

Selecting a CB-X Chastity Cage

Choose the CB-X model with a cock cage that is closest to or slightly larger than your measured flaccid length. For comfort during long-term wear, avoid selecting a cage that is significantly shorter than your anatomy unless you're specifically seeking an extremely restrictive experience.

Choosing Your Chastity Cage

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.

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 too much restriction or loss of blood flow.

Your Keyholder's Preference

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 penis 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

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.- 1 716 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)

 

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.

Shop Mini Me

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.

Shop Mr Stubb

CB-6000S® (S)

2½" - Popular Compact Choice

Our best-selling compact model offers the perfect balance of confinement and daily comfort. Ideal for beginners or users with compatible anatomy.

Shop CB-6000s

CB-3000® (M)

3" - The Original Classic

Our pioneered design set the standard for chastity cages with its innovative features, prioritizing ventilation and comfort for long-term wear.

shop cb-3000

CB-6000® (L)

3¼" - Worldwide Bestseller

Our most popular model, ideal for both beginners and experienced users. Balancing secure confinement and comfort for everyday wear.

shop cb-6000

The Curve® (XL)

3¾" - For Larger Anatomies

Designed with a wider inner diameter of 1½ inches and a natural curve to accommodate well-endowed wearers comfort without compromising security.

shop The Curve

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

Still have questions about sizing?

Our expert team is here to help. Contact us at customerservice@cb-x.com or use our Live Chat feature for immediate assistance.

Note: This Size Guide is provided for informational purposes. Individual results may vary based on anatomy and personal preferences.

Ready to choose CB-X Chastity?

With over 500,000 satisfied customers worldwide, we're confident you'll find your ideal CB-X device. All of our premium kits include multiple u-ring and pin/spacer sizing options to ensure a customized fit for your unique anatomy.