This calculator will recommend you the ideal size for your chastity cage.
💡 Use a fabric tape measure or a string and a ruler.
The most significant challenge for anyone embracing long-term chastity lies in discovering the perfect device that aligns comfortably with their body and lifestyle as a constant, 24/7 companion. Finding the right balance between security and comfort is paramount to making this intimate practice sustainable over time.
Sizing isn’t as simple as taking one or two measurements—there are four key measurements to consider: two critical and two less so. The best approach is to take multiple measurements across different days and times. This gives you a broader set of data to avoid any skewed results. Always check the manufacturer’s website, as they often offer specific fitting tips for their devices.
LENGTH:
Many first-timers make the mistake of choosing a cage that’s too large, thinking they’ll need room for growth. However, this often leads to painful erections, restless nights, messy bathroom trips, and poor concealment. The general rule is to measure yourself when flaccid and subtract half an inch. I recommend going a step further and subtracting an additional quarter inch for a snug fit. Even then, I find that smaller devices often provide the best results.
On the topic of micro or innie cages, I’m not a fan for long-term wear. These can cause urethral restriction, trap urine, and force erections inward, which could lead to discomfort or health issues. While they may have short-term benefits, they’re not ideal for 24/7 use.
DIAMETER:
For most people, diameter is less critical than length or base ring size, which is why there are usually only a few diameter options, even for custom devices. Closed tube designs are forgiving as long as they don’t compress too much. However, open cage designs that are too tight can cause bulging flesh or fluid buildup, so be mindful. If you need to calculate your shaft diameter, measure the circumference and then do the math rather than relying on a flat ruler.
BASE RING DIAMETER:
This is one of the trickiest measurements. A great tip is to experiment with rigid cock rings before buying your device. Some manufacturers even sell sizing rings for this purpose.
I like to say there are two types of cock rings: the first is smaller and instantly inflates your cock, creating bulging veins and leaving you no choice but to orgasm to remove it. Falling asleep in a ring like this could be dangerous. The second is slightly larger. It tightens at full erection but allows you to talk yourself down and remove it without climaxing. This larger ring is your base ring size. The difference between a 1.75 inch and a 1.875 inch ring may seem minor, but it can mean the difference between discomfort and being able to wear the device comfortably 24/7.
Additionally, round and oval base rings, even in the same size, can offer different experiences when combined with a tube.
CAGE/BASE RING GAP:
If you’re experiencing ball slippage or scrotal pain, it’s easy to blame the base ring, but often the issue lies in the gap between the cage and the base ring. This gap is crucial for both comfort and security—it prevents balls from slipping out but shouldn’t pinch or compress the area. If the gap is too loose, you risk an embarrassing situation where the cage could drop off in public. Too tight, and you’ll experience discomfort from pinched ligaments. Custom devices often allow for adjustments in this gap, and metal cages may even be modified with a vise for the perfect fit.
