C-Ring Size Chart
How to Measure for your Ring Size
Finding the right fit for a C-Ring is essential for comfort and effectiveness.
Follow these steps to measure yourself accurately
1. Measurement
- Base of the Tool - Use a soft measuring tape or a string. Wrap it around the base of your erect tool, just above / below the balls ( depends on the ring type , for LockHim cages, take the measurement below the balls.) Ensure the tape is snug but not tight. This is your circumference.
2. Convert Circumference to Diameter
Once you have the circumference, use the formula below to calculate the diameter:
Diameter = Circumference / 3.14
3. Compare with the Size Chart
Now, compare your measured diameter with the sizes provided in the reference chart below
| Ring Diameter | Recommended Circumference (mm) |
| 40 mm | 125 - 140 mm |
| 45 mm | 141 - 160 mm |
| 50 mm | 161 - 180 mm |
| 55 mm | 181 - 200 mm |
4. Choosing the Right Fit
-
Snug Fit - If you’re between sizes, choose the similar size for a tighter fit.
- Comfort Fit - Opt for a larger size for a more comfortable, looser fit.
Ensure the ring isn’t too tight to prevent circulation issues. Always consult a healthcare professional if unsure.