The KINK3D Mk1 Cock Ring represents our first foray into lock-free wearable accessories. This futuristic ring is designed to look and feel incredible, making a visual statement while compressing the package just right.

Made with the same featherweight 3D-printed nylon and satin finish as our iconic chastity cages, the Mk1 is the perfect complement to our Cobra and Viper cages. Keep both around and swap from cage to ring when you’re feeling frisky — or get one to match your caged partner, and it’ll be entirely clear which of you is in charge!

The Mk1 is designed for daily wear. It’s light enough to practically defy gravity, and ergonomically contoured with a 5 mm backward curve at the bottom to hug the body and give room for the balls.

When things get heated, the Mk1 is also ready for action. It’s been carefully shaped with arousal in mind, with a recessed top to minimize any downward pressure on erections.

The Mk1 Cock Ring is designed to be worn around the penis and testicles, sitting flush with your pubic area (similar to a chastity base ring). If you're having trouble putting it on, we recommend pushing one ball through at a time and then coaxing your penis through last.

Sizing

Our complete Mk1 size guide is a good place to start!

The Mk1 is available in eight sizes, from 40 mm to 54 mm. Note: These sizes refer to horizontal space. Each Mk1 ring has an extra 3 mm of vertical space to reduce pressure under the scrotum. (See the diagrams for each spec.)

If you have experience with rigid cock rings (usually metal), we suggest using that to choose your size.

On the other hand, if you're basing your choice off experience with KINK3D (or other) chastity cages, we recommend choosing a size at least as big as your preferred base ring size — and generally bigger. Please keep in mind that a chastity cage partially constrains erections, whereas a cock ring enhances erections, causing everything to swell. If you go too tight, your Mk1 ring could be uncomfortable (or even unsafe) when you get hard.

Special Projects

Mk1 Cock Ring (Black)