This process is much simpler than it looks. If something looks unclear, don’t guess — contact me. I will happily give your measurements a sanity check before your device is made.

Length

Newbie Sub devices are measured similarly to KINK3D®. If you have a Cobra S, a 70 mm Newbie Sub cage should fit similarly.

If you’re measuring from scratch, allow your completely flaccid penis hang naturally and using a soft tape to measure a piece of a string along the top of the shaft following its curvature. The length of the cage should be no longer than 10 to 15 mm shorter than your measurement. Do take multiple measurements at various times during the day and use the shortest one but not the absolute shortest you can get—no need to measure after getting out of a cold bath.

Inside Diameter

A cage’s inside diameter, 38 mm in the above, is the diameter of the entry ring and should be no smaller than your flaccid girth. Measuring your flaccid girth is best done with something like a broad strip of paper so you can get the measurement over a larger area of the shaft. Take the paper and wrap it around your flaccid shaft and mark it. If you want to get a better experience of what the cage will feel like, sizing tubes are also available.

Ring Size

The base ring is the part that holds the device in place. Unlike the cage, it is not simply a body measurement — it is a comfort and retention fit.

A tape or string measurement will almost always produce a ring that is too loose after movement. Sizing rings are the only way to reliably determine your ring size.

Sizing rings work because they let you test real conditions: walking, sitting, and time.
A correct ring should feel secure but unnoticeable after a few minutes.

 

Ball Gap

Typically people who have a very tight scrotum would be happier with a larger gap than those with a looser scrotum who often find a narrower gap comfortable but there isn’t a hard and fast rule. Understanding that, a fitting cage is available which allows for a wide range of adjustment to the ball gap. Most people are happy with 12 – 16 mm.

What Happens After You Submit Measurements

After you place an order, I review your measurements before manufacturing begins.
If something looks inconsistent or unclear, I will contact you for confirmation.