If you have a printer nearby, download and print the pdf below.
Cut the strip of paper corresponding to the size of the bracelet you think might be good for you and put it around your wrist. This will give you a feeling of the fit of your bracelet.
The bracelet sizes are adjustable to up to 2cm. Play with the strip of paper until you find the perfect size.
If the bracelet is too snug, go a size up. If it’s too loose, go a size down.