Available sizes: 

Medium: 7.25" - 8.25" ( 17.5cm - 20.5cm )
Large: 8.25" - 9" ( 20.5cm - 22.5cm )

How to measure your wrist:

1. Wrap a paper or rope around your wrist.

2. Measure the length of paper or rope.

leather bracelet sizing chart - skeletonhd