If you are purchasing a ring as a gift, please see our Gifting Guide.
We want you to Crown Your Jewels with confidence befitting a King.
Anxiety about picking the right size ring is normal, we want to help set your mind at ease! If you have no idea what size you need, start with a simple measurement to get a rough idea. If you own metal rings already then you likely have a great starting size in mind.
IMPORTANT: Once you have identified a suspected size we always recommend getting a set of Sizing Rings (Cock and/or Glans) which includes and bookends your estimated size. Our wide band widths make the rings fit differently than other rings on the market and with 2mm size granularity a tailored fit is possible. Eliminate all the guess work and get the best fit imaginable!
Our signature rings fit around the base of your penis behind the balls. It is important while measuring that you are warm (the boys hanging loosely) and flaccid.
Measure And Mark: Using a string, fabric ribbon, or tailor tape, wrap it around the base of your penis behind your scrotum to get a measurement of circumference. This should be a gentle wrap, firmly against your skin but not squeezing flesh into any wrinkles. We’ll calculate the squeeze factor below. Mark the overlap, straighten out the ribbon, and measure between your two marks in millimeters. Plug your number into the equation below to get your calculated size and then round up to the nearest ring size.
([measured mm] x 0.80) ÷ 3.14 = [calculated size in mm]
Simulate With Paper: Easily construct a paper ring which closely mimics the diameter and band width of our signature Tungsten Carbide rings. It wraps around your shaft, takes care of the measurement, and removes easily. Download the template with full instructions here: King Rings Sizing Ruler
Glans rings fit on the shaft of the penis, just behind the head (glans) are a bit trickier to measure. Unlike a cock ring, which is held in place by the scrotum, a glans ring is held in place just by the corona of the penis head. To fit properly, the glans ring should be loose enough to allow your penis to expand when erect, yet small enough to not slip past the corona when you are flaccid.
Measure And Mark: We need 3 measurements; penis shaft just behind the head – both flaccid and erect, and corona (brim) of penis head while flaccid. Using a string, fabric ribbon, or tailor tape, wrap it around to get a measurement of circumference. This should be a gentle wrap, firmly against your skin but not constricting. Mark the overlap, straighten out the ribbon, and measure between your two marks in millimeters. Plug your number into the equation below to get a calculated size. Your ideal glans ring size is in-between the flaccid and erect shaft size and smaller than the corona size.
[measured mm] ÷ 3.14 = [calculated size in mm]
FINAL STEP (Recommended)
Our customers have such overwhelming success with our Sizing Rings that we actually give you a financial incentive to go this route. Not only will they help you discover your ideal fit, they provide opportunity to practice with, and explore the use of, rigid rings with wide bands like ours.
Sizing Rings: Our sizing rings are 3D printed plastic rings available in each of our offered sizes. These trial rings are made of body safe PLA plastic and can be worn during sex but are not as comfortable as our metal rings. Start with the largest ring; put it on, wear it through erection and loss, and observe how it performs for you. Progress downward through the sizes and find your best fit. The sizing rings ship with additional tips and you get a store credit for when you’re ready to buy the real thing.
In addition to these preparatory steps, you have the option to add sizing ring singles during checkout. This permits you to test the size before unsealing your high value ring, see our Return Policy.
If there is anything more we can do to reassure your size selection please let us know.