The Blue Line Prisoner is a black stainless-steel cock cage with a curved open-bar enclosure, separate base ring, and keyed padlock. Its published cage length is 4.75 inches, with a 1.6-inch inner diameter and 2.36-inch overall width. The Stag Standard store SKU is BLM5013BLK, and the exact-product UPC is 489080826334.
Verified product specifications
| Store SKU | BLM5013BLK |
|---|---|
| UPC | 489080826334 |
| Product line | Blue Line |
| Color | Black |
| Material | Stainless steel |
| Cage length | 4.75 inches |
| Cage inner diameter | 1.6 inches |
| Published overall width | 2.36 inches |
| Design | Curved open-bar enclosure with centered tip opening |
| Closure | Separate base ring and keyed padlock |
| Power | None; manual device |
Fit boundary: this is a fixed-size rigid cage. The 1.6-inch figure describes the cage’s inner diameter, while 2.36 inches is the published overall width; they are not interchangeable measurements. No exact inner diameter for the separate base ring was verified. Measure before purchase and compare the numbers with the chastity-cage fit and safety guide. A product image, body type, or usual condom size cannot determine cage fit.
Rigid open-bar design
The stainless-steel enclosure follows a downward curve and uses open vertical bars rather than a solid tube. The open areas provide access for visual checks and routine washing, while the centered tip opening can help with alignment. Open construction does not make a poor fit safe, prevent pinching, or guarantee unrestricted urination. Check that skin is not caught between the cage, connector, ring, or lock before closing it.
Rigid metal does not stretch to accommodate swelling. Temperature, friction, movement, anatomy, and the position of the base ring can change how the same measurements feel. Do not force the device onto a body that does not fit its fixed cage dimensions. The black finish can also hide redness or color change, so inspect exposed and covered skin carefully whenever the device is removed.
Before locking
- Inspect every bar, joint, edge, connector, ring, padlock, and key. Do not use the cage if any surface is rough, bent, chipped, corroded, cracked, or difficult to unlock.
- Confirm that the cage can be fitted and removed without force before involving a keyholder or longer scene. Keep the body relaxed and non-erect during fitting.
- Use a small amount of compatible lubricant only where needed for fitting. Too much lubricant can make handling and fit checks less reliable.
- Close the device slowly while watching every contact point. Confirm that skin is not trapped and that the lock opens smoothly.
- Test urination, movement, sitting, and clothing pressure while the key and an immediate release plan remain available.
Keep at least one working key immediately accessible to the wearer or a responsible adult who can remove the device without delay. Do not use a timed lock, sealed key container, travel arrangement, or scene rule that prevents prompt removal. Never rely on cutting a metal cage as the primary emergency plan.
During wear and partnered control
Agree in advance on the duration, check-in schedule, permitted activities, who holds the key, and what ends the scene. Start with a short supervised trial. Remove the cage immediately for pain, numbness, coldness, marked swelling, color change, broken skin, loss of sensation, difficulty urinating, or any discomfort that does not ease promptly. Seek urgent medical care when a device cannot be removed or symptoms persist.
Do not sleep, drive, exercise, travel through security, or leave the wearer unattended in the cage until the risks and removal plan have been considered for that activity. No exact-product source verified overnight, extended, or unsupervised wear. Alcohol, recreational drugs, sedatives, and anything that reduces sensation or judgment can delay recognition of a circulation or pressure problem.
For partnered use, the wearer retains the right to stop at any time. A keyholder agreement never replaces ongoing consent, circulation checks, hygiene, or access to removal. Review the partner-use guide before transferring control.
Cleaning, drying, and storage
- Unlock and separate the cage, base ring, and padlock as far as the supplied design allows.
- Wash the stainless-steel body with warm water and mild unscented soap, paying attention to the bars, joints, tip opening, connector, and underside of the ring. Follow the instructions supplied with the product when they are more specific.
- Rinse away soap and lubricant. Dry every part completely, including joints and lock openings, before reassembly or storage.
- Store the clean, dry device and both available keys together in a dry place where the finish cannot be scratched by other metal objects.
Do not boil, bleach, dishwasher-clean, or use abrasive cleaners unless the exact instructions received with the product explicitly authorize that method for every component and the black finish. The padlock may require different care from the cage. See the cleaning and storage guide and materials and care hub for conservative maintenance guidance.
Browse related products
Compare other fixed, adjustable, soft, and rigid options in the Chastity and Pup Play collection. Use the Blue Line, Cock Cage, Rigid Cage, and Stainless Steel filters to compare construction and published measurements. The broader Gear & Apparel and Fantasy & Kink hubs provide related discovery paths.
Orders use discreet outer packaging. Review the returns, refunds, and hygiene policy before opening an intimate product.
