Measuring For My Evotion Orion Male Chastity Device

evotion orion chastity device
This is the custom Orion chastity device. This is a sample image from their website. Click the image to go to the page where you can see the device and buy it if you want.

I briefly mentioned in an earlier post that I’m getting a new 3D-printed male chastity device. This one is truly unique. While I love the Cherry Keeper and kind of like the one made by Custom Chastity (has a sandpaper finish that took hours to smooth enough to wear. We don’t recommend that you get one.), this company reminds me of the amazingly beautiful chastity devices made by Steelwerks. Their male chastity devices are individually designed works of art that cost many thousands of dollars. Truly male chastity jewelry.

Evotion is a company that makes a line of incredible 3D-printed male chastity devices. Most of their products are designed for men who are pierced, primarily Prince Albert piercings. They have a new, ball-capture device called the Orion. What makes it unique is the amazing quality these people have gotten from 3D printing. Every other 3D-printed device I’ve seen or tried has a thick, clumsy look. The makers claim that in order for the plastic (medical-grade nylon) to have the needed strength to contain a feisty penis, the material has to be thicker than it would be if the device was made of stainless steel. This makes intuitive sense. Apparently, it’s not completely accurate.

I’m going to be reviewing this male chastity device. I’m getting an Orion in red-dyed nylon. As you can see in the image, the finish is good and the details are amazing. I will probably be getting mine close to New Year’s. There is a very long lag between ordering and actually receiving the device. Speaking of ordering, Evotion has the absolute best measuring and ordering process. Unlike every other custom-chastity device maker, Evotion provides meaningful instructions and gives you reasonable results you can compare to what you measure.

I will be photographing that process and will share it with you in the near future. All I can say is that the clear, detailed instructions make it very difficult to screw up your measurements. The only one that they don’t offer any particularly useful help is for the base ring. Their take on it is that you should order a base ring just big enough to get one ball through. I haven’t tested this but based on my experience it’s not an unreasonable way to figure out what size ring you need.

penis measuring with the caliper
This inexpensive digital caliper makes it easy to do accurate measurements of your penis. The blades are a bit sharp so be careful. Also avoid squeezing. By pressing a button, you can get the measurements in millimeters. This measurement is actually inaccurate. I inadvertently squeezed the soft shaft with the measuring blades. You can purchase a digital caliper for less than $10 on
(Click image to view larger)

Because their male chastity devices are designed to work with pierced penises as well as un-pierced ones, like mine, and because 3D printing permits varying the size of everything, more measurements are needed than you would normally expect to make. They need the length of the glans (head), circumference (or diameter) of the penis shaft, as well as the length of the shaft along the top from the place where the glans joins the shaft to your abdomen. At a later date I will create an illustrated guide to this kind of measuring. I use a digital caliper for most of the measurements. The reason I like it is that I can adjust the caliper until it’s correctly measuring the specific spot, then remove it and look at the numbers on the readout to record the value. It saves a lot of tricky bending and moving to get measurements.

Evotion observed that the length of the glans (head of the penis) is almost exactly the same size as the diameter of the shaft. In circumcised men, the correlation is amazing. I measured my glans length to be 29 mm (1.14 in) and shaft diameter (completely flaccid) of 31 mm (1.22 inches). The difference is less than 2/10 of an inch. This is likely to be a measurement error on my part. The folks at Evotion prefer measurement in millimeters but will accept inches if that is more comfortable for you. The metric length measurement is generally more accurate than fractional inches.

After completing the order, I received a confirmation email. This is expected with e-commerce. What I didn’t expect was a very personal communication reviewing my measurements. Evotion likes to have a relationship with its customers. They want the measurements to be very carefully made so that the device will be a perfect fit. If there is a problem, remanufacturing a part of the device is relatively inexpensive. However, Evotion prefers to get it right the first time.

All this attention and care isn’t cheap. The base Orion costs $369. This is about the same price as a Mature Metal Jail Bird custom device. It’s unlikely that a first-time user will make this investment. In a way that’s good.. It takes a little time to get to know your penis well enough to supply accurate measurement information as well as developing the commitment to actually wear a male chastity device full-time. I’m sure that the Orion will prove to be completely comfortable and easy to wear for long periods.

I’ve always preferred steel. There’s something about the feeling of metal locked around my penis that gives me a strong sense of being controlled. Over the years, my viewpoint has changed a bit. I really like wearing a device that is so light I’m not even aware it’s there most of the time. If I try to get an erection, the lightweight device makes itself known.

orion chastity device optional filigree
This is the filigree I selected. It’s called “Devotion”.

One interesting feature of Evotion male chastity devices is that the company offers some no-charge customization that I had no idea were available. For example, they offer a good selection of different kinds of filigrees for the device. I selected one which is composed of hearts. In addition, they can add text along the top of the device. I’ll surprise you with what mine says (though I’m pretty sure you can guess).

Another somewhat surprising feature of the Orion male chastity device is that it is in three pieces instead of the usual two. One reason for this is that it can be built to work with the Prince Albert piercing. The top of the device can be fixed in place with a pin and then joined to the rest of the shaft and finally, the base ring. The device has two locks. One secures the shaft to the base ring and the second secures the head (glans) to the shaft. It may make the device easier to put on and take off. I haven’t seen any comments about this. In any case, I’m sure Mrs. Lion won’t have any problem locking me up.

When I got my Cherry Keeper, I had a long, interesting dialogue with its maker that helped get the device designed explicitly for me. It’s absolutely perfect in terms of fitting me. I like wearing it and it keeps my urethra properly centered at all times. That’s very important to me. I really need to pee standing up. Getting up and down from a toilet seat is difficult for me since my spinal surgery. I know Mrs. Lion has been hesitant to lock me up again because she is concerned it will make using the bathroom that much more difficult for me.

Mrs. Lion informed me that by the time you read this post I’ll be securely locked into a chastity device. If she gives me a choice, I’m going ask for the Cherry Keeper. It’s a little more trouble for her to put on. She has to lubricate the head of my penis in order to slip it over the headlock* feature of the Cherry Keeper.

new custom cherry keeper chastity device
Notice the sharp taper. Also notice the wide headlock that will keep the head of my penis “locked” inside the cage.

*The headlock is a “shelf” that fits under the glans (the notch just under the head before the shaft of the penis). It’s narrower than the head so that once pushed up and over that shelf, the head of the penis is not going to move back without the device being unlocked and pulled off. The maker believes this is an effective anti-pullout feature. I don’t believe it really is. However, it does a great job of making sure the head of my penis is firmly pressing against the end of the cage. That assures that my urethra remains centered in the hole provided for it.


  1. I received my Steel Evotion Bijou with titanium PA pin a couple of days ago, and my wife immediately loved it. I was locked into our Lori #1 for what I thought would be quite a while (she said at least until Thanksgiving), but when this arrived she immediately wanted to switch to it.

    I’ve only been wearing it about 12 hours now, and of course it can take a few days or even (gulp) weeks for some problems to become apparent, but so far it is completely comfortable, It also looks very nice on; you can see it here (NSFW):

    I was concerned that the enclosed design (compared to the very open Lori device) would prevent my wife from teasing me very effectively, but in fact just enough of my skin squeaks through the latticework that she can lightly stroke me everywhere – even the “sweet spot” – but with no chance of stimulating me to orgasm.

    I agree with your evaluation of Evotion’s measuring and ordering process. In addition to this, for the (fairly expensive) steel devices, they will also provide as many prototypes printed in roughly-finished plastic (for $100 each) as needed to make sure that your measurements are correct. I used two prototypes, and made a couple of further minor adjustments, before submitting the final request to print in steel. The resulting fit seems perfect.

    I’m very pleased so far – I hope it works out!

    1. Author

      It’s a very interesting looking device. Visit very heavy? There is also a sizable gap between the shaft container and the head cage. That looks like it leaves the excellent opportunity for arousing you. I hope it works out. I truly like the Evotion products. I’m very anxiously awaiting the arrival of mine.

  2. I have a cherry keeper which I bought upon another recommendation you had made for it.
    Standard cage, large ring. It works well though I’m ordering another as a few adjustments are necessary.

    I really appreciate your blog and now I’ve heard part of you podcast interview and look forward to hearing the rest.
    We live quite remotely in NE Washington State and finding people with similar interests is highly unlikely.
    Thanks again for your informative blog.

    1. Author

      I’m not sure why you are discussing the Cherry Keeper when the post is about the evotion product. I only mentioned the Cherry Keeper to discuss the headlock feature. I’ve edited your comment to remove some of the irrelevant content. I would appreciate it if you could comment on the post you are reading. There is a Cherry Keeper review you can find by searching for Cherry Keeper. The comment is certainly on-topic for that review.

      By the way, we live in Western Washington not too far from Seattle. We vacation in northeastern Washington near Republic.

  3. I have a small collection of cheap cages, some based upon Lion recommendations. This is the first time I have seen anyone describe a morning woody while caged like I experience. The fantasy of being locked up and not being able to get hard is not what happens to me.
    As with Mark, my morning or even sleeping while dreaming woody results in my cock pushing the cage along with painfully stretched scrotum while an internal penis rages painfully inside my abdomen.
    Several times I have been very close to unlocking due to the discomfort. Then I think, “this is what you asked for” and usually can get the swelling to subside by walking to the bathroom.
    I hope that Mark will be able to share more of his experiences here.

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