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How to Measure

How are measurements taken?

The device will sit on the top 1/3rd of your glans. Find the size range that suites you on the ordering page drop down.

To figure out which size will best fit you, follow the directions below:

Gather the supplies you will need for this:

  • 6" of string
  • A marker
  • A ruler (preferrably in mm)


1. Use a string to loosely loop around your penis when flaccid, about halfway up the glans.


2. Be sure to position the string on the area between your glans and shaft on the underside (where your frenulum is/was).


3. Mark the string where the two pieces meet.


4. Lay the string out on a flat surface and measure from the end to the mark you’ve made (about 110mm in this case).