Please measure around the wrist, this is the wrist circumference (as shown in the image below)

Size Guide
Size US Wrist Circumference EU Wrist Circumference
 S/M5.9 – 6.7 inch15 – 17 cm
 M/L6.7 – 8.2+ inch17 – 21+ cm

* The measurements in the guide are based on measurements taken directly from the body, not the garment. If your measurement is between two sizes, we recommend you select the larger size.