Perhaps the most common question that you will find on any male chastity-related forum is some variation of ‘which chastity device should I be wearing?’ With apologies in advance if you were wondering this yourself, this question, by itself, is not particularly helpful.
A cursory search of Google, Amazon, eBay, Alibaba–or, for the Luddites among us, a quick junket down to the local brick-and-mortar sex shop–will disclose that there are literally thousands of different devices to choose from, in all manner of styles, shapes, sizes, and materials. Based on your own particular circumstances, some of these devices will suit your needs better than others, and many are complete junk that are not even worth a second look.
What sort of device you might choose for your own purposes ultimately boils down to three factors broadly: (1) security, (2) physical comfort, and (3) general user-friendliness. Price and aesthetics are also certainly things that you might take into account, but I won’t discuss them as these are entirely personal criteria and in any event the fact that the CB-6000 knockoff you’ve been eyeing on DHGate only costs $24.99 and comes in a nice shade of ‘Sissy Pink’ probably isn’t actually going to make you any more inclined to behave yourself.
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D. Fit and Functionality
The final consideration in selecting your chastity device–and perhaps the most important in terms of ensuring both comfort and an at least reasonable level of security for longer-term wear–is its fit.
You might thus say that this topic thus serves as a ‘fitting’ conclusion to this section, but I digress: a beautiful, expertly-crafted (and incredibly expensive) custom full belt from MySteel or Carrara will ultimately prove no more secure than the previously-referenced knockoff CB-6000 in ‘Sissy Pink’ that you found on DHGate if the waistband is several inches too large, and it will likely be no more comfortable or enjoyable to wear either.
Finding a device that truly fits properly is far more difficult than one might expect, and there is inherently a certain degree of guesswork involved–especially at first. Barring a stroke of dumb luck, there really are only two things that you can do to better your chances of getting the proper fit: (1) having an especially good grasp on the precise size of your penis across all dimensions and buying an off-the-rack device that approximates those measurements, and/or (2) investing in a custom-fitted device.
i. The Measure of a Manhood
For even a relatively straightforward cage- or tube-style device, there are at least three measurements that must be taken into account: the inner diameter of the base ring, the inner diameter of the cage/tube, and the overall interior length of the device from the back of the base ring to the tip of the cage/tube. As you might imagine, properly sizing out a full belt is significantly more complicated, especially since each manufacturer has their own proprietary process for doing so. Any further discussion thereof is well above my pay grade and therefore ultimately fruitless, so I’ll simply once again advise that any full belt you buy needs to be custom-made by somebody who actually knows what they’re doing and can walk you through the measurement process.
Further complicating the situation is that by virtue of mass-production, most devices are only available in a limited number of sizes, which (no two penises being quite alike) probably doesn’t include your size specifically. Additionally–and this applies to both custom and off-the-rack devices alike–there are no actual, uniform industry standards as concerns measurement; for instance, a device advertised as ‘3 inches in length’ might have an overall length of 3 inches, or it might have a cage or tube that is 3 inches long with additional, unadvertised length in the gap between the cage/tube and base ring as well as in the base ring itself.
It is accordingly critical to thoroughly do your homework before buying any chastity device; wearing one that isn’t properly sized is going to cause you a world of problems with both security and comfort. Your first order of business is accordingly going to be figuring out exactly just how large (or perhaps small) your penis actually is when completely flaccid–this entails separately measuring the length of the shaft, the girth of the shaft, and the circumference of the area where the base ring will sit.
As a first principle, I would suggest that you should measure in millimeters rather than inches, as this is going to be far more precise; you can always convert your measurements back into inches if you are considering buying a device from a retailer that only advertises their devices in inches. A couple of general figures to know for this purposes is that 3 millimeters is just shy of one-eighth of an inch and by extension 25 millimeters is almost exactly 1 inch.
A second rule-of-thumb is one that should already be familiar to any carpenters or other tradespeople that might happen to be reading this: measure, measure, and then measure again. Unlike an actual piece of wood, the size of your penis is not fixed; throughout the day, both its length and its girth will change (perhaps dramatically) based on factors such as ambient temperature and how sexually aroused you happen to be at any given time. I would recommend taking each of the measurements I describe below somewhere between ten and twenty times–or more if that is what it takes to find a relatively stable average.
As a corollary, you might find yourself somewhat excited should you happen to contemplate exactly why there is a piece of fabric tape wrapped around your penis as you’re measuring, so when in doubt you should assume that it is in fact smaller than your measurements suggest and accordingly size down.
Measuring the length of your penis is by far the simplest part of this exercise: simply take a cloth tape and measure from the base of the shaft where it meets the mons pubis all the way to the tip of the head. Doing the same on the underside of the shaft of the penis–from the junction with the testicles to the tip–will also come in handy. Measuring your girth is likewise relatively straightforward: take the tape, wrap it around your shaft at its widest point, note the total measurement, and (for those who aren’t acquainted with basic algebra) divide by 3.14.
Measuring for the base ring is a little more involved, but you won’t necessarily need to do it as many times as the size of this part of your anatomy is far less variable than the rest of it. First, find something relatively pliable but nonetheless substantial (such as an old shoelace) lying around your home and tie it snugly around the top of the shaft and the underside of the testicles at the very base of your penis. It’s somewhat difficult to express in words exactly what it is you’re going for, but basically this groin garot should press slightly into the skin without feeling uncomfortable and/or cutting off circulation. Then, when you think you’ve got it right, (carefully) cut the cord, measure its length, and divide by 3.14.
For each of your measurements, discard any that are clearly outliers (say, by more than eight-to-ten millimeters) and average the rest. These are the figures that you will be using. You might be tempted to think that all that’s left to do is to simply find a device that best matches your average measurements and purchase it; while you certainly can do that, there are a couple of additional adjustments that you can make that will almost certainly help you find a device that’s more comfortable to wear.
The one thing that you do not want to do is deviate from your base ring measurement in either direction; having too large of a base ring will cause the device to slip off of your penis on its own accord, and having one that is too small is perhaps the cardinal sin of male chastity devices: it can cause serious, serious injury to your testicles if you are not careful.
Counterintuitively, perhaps, most other issues with improper fit actually arise when the device is too large. As I alluded to in passing earlier, when in doubt it is almost invariably better to size down; the less room that your penis has to become erect within the device, the more comfortable it is going to be to wear long-term.
You can easily wear a a device that is two-to-three millimeters smaller than your measured girth without much if any issue; in fact, it is not unlikely that you became aroused at least some of the time while measuring, so if anything the fit should be better. You can be even more liberal in sizing down the device’s length; given the tendency of the penis to shrink and expand over time, ordering a tube that is five-to-ten mm shorter than your measured length will ensure not only that the penis has less room to expand, but also conversely that the urethral opening is more or less always flush with the tip of the device–even in moments of contraction–which makes going to the bathroom a lot easier.
Following these instructions should help you to find a reasonable device, so long as the device is within a few millimeters of each of your measurements. However, once you have a general idea of what’s comfortable to wear, the absolute best way to ensure a perfect (or, more likely, near-perfect) fit is to eventually invest in a custom device.
ii. Custom Devices
Not to flog a dead dolphin, but if you’re truly serious about male chastity then purchasing a custom device is something that you’re eventually going to want to do. I’m not suggesting that your first device should be custom-made–in fact, I’d strongly recommend against it–but after wearing no more than a few devices you should have a pretty good idea of what works and what doesn’t and thus perhaps start to consider buying custom.
I’ve already touched at some length in previous sections about many of the relative merits of custom devices and will try to keep discussion thereof to a minimum, suffice to say that the design, quality of materials, security, comfort, and overall user-friendliness will all be superior with a custom device.
Perhaps the biggest overarching benefit is that the people who custom-make devices are themselves actual male chastity lifestylers, with all that entails. These people are not simply in it for the money–not that there is anything wrong with making an honest living–but rather are committed to creating high-quality devices, not least because many of them no doubt wear the devices themselves. More fundamentally, these people know they’re doing, and better yet will be happy to share the fruits of their knowledge with you. There’s something to be said for good customer service.
While I have my own personal preferences when it comes to custom device makers (my first two were from Steelworxx, my third is currently on order from Rigid Chastity, and I had a lovely exchange with Fancy Steel over several days before deciding that I simply wasn’t ready to invest in a full belt) I haven’t heard much negative about any of them. For a device that is inherently personal, the two most personal criteria–price and aesthetics–will almost invariably become the most decisive.