On what occasion would you like to wear your glans ring? Would you like to wear it during sexual intercourse or just as a piece of jewelry? In order to determine the appropriate glans ring size, you need to determine the correct perimeter of your glans penis in the respective (flaccid / erect) state of arousal.
Determine the size right behind your glans penis by using a fairly thin and inelastic string. We recommend that you do not tighten the string, but apply it until a ring-side contact is given. In order to measure the size, please mark the two passing ends with a pen. The distance between the two marks indicates the perimeter of your glans penis. If your determined size lies in between two glans ring sizes, we recommend picking the smaller one.
|  | ||
|---|---|---|
| Size | Perimeter (mm) | Perimeter (inch) | 
| 18 | 54 - 57 | 2.13 - 2.24 | 
| 19 | 57 - 60 | 2.24 - 2.36 | 
| 20 | 60 - 63 | 2.36 - 2.48 | 
| 21 | 63 - 66 | 2.48 - 2.60 | 
| 22 | 66 - 70 | 2.60 - 2.76 | 
| 23 | 70 - 73 | 2.76 - 2.87 | 
| 24 | 73 - 76 | 2.87 - 2.99 | 
| 25 | 76 - 79 | 2.99 - 3.11 | 
| 26 | 79 - 82 | 3.11 - 3.23 | 
| 27 | 82 - 85 | 3.23 - 3.35 | 
| 28 | 85 - 88 | 3.35 - 3.46 | 
| 29 | 88 - 92 | 3.46 - 3.62 | 
| 30 | 92 - 95 | 3.62 - 3.74 | 
| 31 | 95 - 98 | 3.74 - 3.86 | 
| 32 | 98 - 101 | 3.86 - 3.98 |