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Evo Image

Made For You

Made-to-Measure and designed for long term wear

A completely parametric system builds the device to your measurements. The Evo acts as a shell, form-fitted and comfortable for long term wear.

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Sport Teaser Image

Chastity for an active lifestyle

Designed for cyclists, swimmers, runners, and other dynamic movement sports where movement is imperative.

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Blackout Kyron

Kyron Icon

Modular. Powerful. Secure.

Currently in development

Kyrios (κύριος) - From Ancient Greek
Denotes supremacy and authority. Lord, master, guardian, ruler, owner.

Cheiron (Χείρων) - From Ancient Greek
Means “hand” or "grip"

Kyron Profile


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Measuring Guide | FAQ

Order Time
Estimated Time: 5-8 Weeks

Your Measurements


Must be at least 60mm. Check you are entering mm's


Must be at least 60mm. Check you are entering mm's


Must be at least 10mm. Check you are entering mm's


Must be at least 25mm. Check you are entering mm's


Must be at least 30mm. Check you are entering mm's

Tight Loose


Include things like: Previous base ring size, Hypospadias, Single Testicle, etc Some requests may not be able to be fulfilled or may require additional charges


Made for you.

Made-to-Measure and designed for long term wear


- Evo Cuff Base Ring
- Evo Chastity Cage
- Integrated Lock & Key

Evo Cuff Base Ring
Head Styles
Order Yours

Made for you

A Custom Chastity Device for Every Man

The Evo is the ultimate custom sized chastity cage.

Your penis isn't shaped like anyone else's. So why are you getting the same cages? Using a proprietary, made-to-measure system, the Evo creates a device fitted to you. This means that you get the cage you want, the first time.

No sizing guides necessary. No more getting the wrong size.

The Evo acts as a shell, form-fitted and comfortable for long term wear. This way you can order confidently, knowing this will be the last cage you'll ever need to purchase.

Anatomically Based

The Evo was built from the ground up to adapt to your anatomy. Things like accounting for erection size, vein position, and the penile structure.

It's how we know your base ring size without you needing to tell us.

Open and Hygienic

With an extremely open design, the Evo makes it easy for you to maintain good hygiene. This means less smell, less mess, and less time it needs to come off.

Simply put, the Evo makes being locked longer, easier.

Fitted To You

Using our proprietary system, the Evo cage gets fitted to your anatomy. No more dealing with size charts and being unsure if you have the right size.

With a few good measurements, you will get a cage that feels like a protective shell: firm, yet comforting.

How it works:

  1. You accurately and precisely measure your penis using the Measuring Guide
  2. You enter your measurements, customize your Evo, and submit your order
  3. We create your unique Evo which is adjusted and fitted to you from your measurements
  4. The model gets sent for 3D printing and polishing
  5. We get your Evo, check it for quality assurance, pack it, and ship it to you
  6. You receive it and get to enjoy the last chastity cage you'll ever need to purchase

Still have more questions? Check out our FAQ page or feel free to send us an email

How it Fits:

The Evo isn't designed like any other cage. It is going to fit slightly different from cages you are used to in order to give you the best chastity experience possible.

Designed to fit a wide range of states a penis can come in, the Evo is designed to have the perfect combination of being snug and secure in all the right places while still having a bit of space to grow. This is so that the Evo can comfortably accommodate a full erection in a healthy way.

For most guys, it will seem to have a slightly looser fit. Having extra room helps keep things dry and more hygienic. It also means that your urethra maintains alignment more often without any deformity enabling you to pee standing up with minimal effort.

Evo Cuff

Ergonomic Cuff Design

This isn't your average base ring. This is the most comfortable ring on the market.

Evo Cuff Shape

Evo Cuff Dynamic Shape

With a design that is actually shaped like your anatomy (aka not a circle like the other cages), the Evo's unique profile makes long-term wear comfortable and easy.

Each Evo base ring is created specifically for each customer's size and shape. Some people need a wider base ring while others need a more narrow shape. The Evo does that for you.

No more ball burn, erection pain, or circulation issues.

Waterfall Edge Design

The waterfall design is a massive improvement in the evolution of chastity wear. This unique design provides more surface area so your skin is less strained and more comfortable. All without increasing bulk.

Evo Cuff Waterfall Edge

Evo Cage

Evo Signature V-Shape

Unique to the Blackout Evo cage, the V-shape shape helps reduce erection strength and duration by not putting pressure on the deep dorsal vein and the superficial dorsal vein. This allows for less restricted blood flow unlike most cages.

Simply, this means that, unlike nearly every other device, the Evo is scientifically designed from the ground up to be a better chastity cage.

Anatomical Cage Entrance

Have you ever seen a cage entrance ring shaped like this? We didn't think so.

Like the base ring, we went beyond a simple circular ring. This ring conforms to your anatomy so give the right amount of squeeze to hold things in place without cutting off your urethra.

It also gives a little more room to your testicles to keep everybody down there happy

Erection Accommodation

The Evo was designed to accommodate erections, rather than suppress them. While the prevailing concept for a chastity cage is to suppress an erection, this often leads to the unwanted and painful slippage and pulling at your balls.

The Evo does this differently

By intentionally accommodating an erection, the Evo can use an erection against itself to keep the cage in firmly position on your hard member. This means less ball pulling, less edema, and a tantalizing, teasing feeling when your penis perfectly fills up your fitted Evo.

Night time pain is no longer a necessary part of the chastity experience. Stop settling for less.

Evo Head Styles

For-Hygiene, For-Enclosure, or For-Skin

Choose between the open, closed, or uncut head so you have full control of your exposure.

Want simple hygiene and easy realignment for peeing? The open head is for you.

Want more security and less stimulation? The Evo has you covered with the closed head.

Have a foreskin and are tired of all the pinching and rubbing? We created a head just for you.

Anatomically scultped, each head of the Evo provides the perfect features for what you crave out of a chastity experience.

Open Head

The original, revolutionary, open design. Simple, easy, clean.

Like the rest of the Evo, the open head was designed to give the perfect amount of access. This way its easy to clean and hard to do anything more.

The tip of the head has a unique cradle shape that helps keep things positioned so you are free to pee in whatever position you would like

Closed Head

The closed head is for individuals that want more security or crave the feeling of being more enclosed.

Originally based on the Open Head, the Closed Head has a very similar sculpted shape with a smaller pee slit. With two hole vents on the side, the Closed Head provides a more locked down feeling while still allowing you to maintain proper hygiene.

Uncut Head (Beta)

Long been neglected, this one is for the intact folk.

An all new design created to reduce pinching, allow foreskin manipulation but still retain security against unwanted touching.

Still being a beta, this design is subject to change.


"It is such a perfect device, its scary"

"This has got to be the most comfortable cage I’ve ever had! No pinching, no chafing under my scrotum, no matter whether I wear a thong, briefs, boxers, boxer briefs, any type of underwear or underwear fabric, it’s fantastic! I work outside all day in a physically demanding job. It gets really hot in the summer where I’m at and this cage never feels uncomfortable, no matter how much I sweat or move! I’m going to throw out all my other cages!!!"

"I really appreciate all the support you provided and can definitely see myself locking long-term with this cage!"

Review system coming soon...