a. Measure your wrist
Use a measuring tape for the most accurate reading, but if you don't have one, take any flexible object (a string or a strip of paper) and place one end on any point at the bottom of your wrist.
b. Decide on your preferred fitThe average wrist size is 15.0 to 16.0cm for females and 16.5 to 17.5cm for males, but the actual range can vary widely. If you prefer a snug fit, order the exact size you measured. Prefer a looser fit? We recommend upsizing by 0.5cm but not more than 1cm.
Pull it around the circumference of your wrist until it meets the first point, without any allowance. Mark that point.
Measure the length between the end of your measuring object and the mark with a ruler.