Use a piece of string, wool, or cut a narrow piece of paper.
Put it around your wrist, where you usually wear the bracelet.
Where the rope joins the other end make a mark with a marker. Make sure that the rope fits well to your wrist, do not tighten too much, but do not leave margin either.
To finish, use a ruler to measure the piece of string from the end to the mark you have made with the marker.

This is the measure you should choose when you go to buy one of our bracelets. From this measurement we will take care of making the model of bracelet that you choose go perfect.