Description
DEVIL KEEPER — From Standard Fit to Your Own Custom Cage
DEVIL KEEPER has always been more than just another Cobra cage. From the beginning, it was designed as a starting point for users who eventually want a truly personalized chastity experience.
Rather than immediately ordering a fully custom-sized cage, we strongly recommend first wearing the standard DEVIL KEEPER version for a period of time. This allows you to better understand your preferred fit, ring pressure, cage proportions, and overall comfort before investing in a completely custom-made cage built specifically for your body.
For many users, DEVIL KEEPER becomes the testing platform that leads to their ideal long-term setup.
Two Ring Systems — Two Different Wearing Experiences
The updated DEVIL KEEPER now combines both ring systems into one collection.
Flat Ring Version
The Flat Ring sits closer to the body, creating a tighter, cleaner, and more compact silhouette. It delivers a stronger sense of containment and visual control while maintaining the lightweight openness of the Cobra frame.
Many users prefer Flat Ring for:
- A more locked-in feeling
- Closer body contact
- A slimmer visual profile
- Stronger compactness during wear
Arc Ring Version (2026 Release)
The Arc Ring version was officially introduced in 2026 after extensive wear testing and ergonomic adjustment.
Creating a truly comfortable curved ring was far more difficult than simply bending the shape. The angle, pressure distribution, spacing, and body contour all required repeated refinement before achieving the final structure.
The result is a smoother and more natural wearing experience:
- Reduced pressure at the base
- Better adaptation to body curvature
- Improved comfort during extended wear
- Easier movement and reduced tightness sensation
Compared with Flat Ring, Arc Ring feels more relaxed and ergonomic while still maintaining stable support and control.
Expanded Ring Size Options
The Arc Ring version also introduces an additional 55 mm size option.
Available ring sizes:
- 1.65″ (42 mm)
- 1.81″ (46 mm)
- 1.89″ (48 mm)
- 2.09″ (53 mm)
- 2.17″ (55 mm, Arc Ring only)
- 2.36″ (60 mm)
Because DEVIL KEEPER was developed as a preparation platform for future customization, we intentionally created a wider ring selection range than most standard cages.
In reality, most users usually only need one or two nearby ring sizes to discover their ideal fit. That is why we also offer combo options, allowing users to experiment more freely before deciding on a final long-term size.
Automotive-Grade Surface Finish
Unlike ordinary painted cages, DEVIL KEEPER uses a multi-layer automotive-grade coating process.
The surface is:
- Smooth and glossy
- Waterproof
- Resistant to fading and peeling
- Durable for long-term wear
- Safe for showering and swimming
Combined with the lightweight open Cobra structure, the finish creates a sleek, refined appearance while remaining breathable and practical for daily use.
A More Refined Cobra Experience
If you are tired of generic cages and want something that feels more premium, more personal, and more intentional, DEVIL KEEPER offers a different direction.
It is not only about appearance. It is about discovering what truly fits your body and your preferences before eventually moving into a fully custom-sized cage made specifically for you.
For many users, this is where customization begins.
Enjoy.

Product Specs
- Material: medical-grade resin
- Cage size:
- If you’re new to wearing a cage or prefer a roomier feel, consider sizing up or using the cage length as your reference.
- S: 2.68″ (68mm) cage length, 2.36″ (60mm) tube length — recommended flaccid length around 2.98″ (76mm)
- M: 3.35″ (85mm) cage length, 3.03″ (77mm) tube length — recommended flaccid length around 3.72″ (94mm)
- L: 3.94″ (100mm) cage length, 3.62″ (92mm) tube length — recommended flaccid length around 4.37″ (111mm)
- XL: 4.33″ (110mm) cage length, 4.02″ (102mm) tube length — recommended flaccid length around 4.80″ (122mm)
- XXL: 5.04″ (128mm) cage length, 4.72″ (120mm) tube length — recommended flaccid length around 5.60″ (142mm)
- Ring types: flat/arc
- Ring sizes: 1.65″ (42mm), 1.81″ (46mm), 1.89″ (48mm), 2.09″ (53mm), 2.17″ (55mm), 2.36” (60mm)
Package Includes
- 1 x DEVIL KEEPER — Black Chastity Lock — CC10
- 1 x Ring
- 1 x Extra Cage Tube (optional)
- 1 x Nylon Strap (optional)
- 1 x Lock with 2 Keys







































































Reviews
There are no reviews yet.