Sizes are measured from end to end of the cuff, so if you measure your wrist circumference, cuff size would be about 1.5- 2cm (0.6-0.8 inch) less, for example, if your your wrist circumference is about 17 cm, choose 15 cm.
If your wrist circumference falls in between two sizes, We recommend that you go up a size as you can always adjust the cuff bracelet to have a tighter fit around your wrist.