A = circumference of narrowest part of wrist
Small: 120mm–155mm 4.7″-6.1″
Standard: 135mm–170mm 5.3″-6.7″
Large: 150mm – 220mm 5.9″-8.7″
(n.b. measurements are approximate)
Our wrist size guide will give you the best fit for your wrist but there is some overlap in the sizing. The hand straps do increase in length as the wrist size increases, so if you have a small hand part then you may wish to try a smaller size.