3 step to decide your bracelet size:
1. please measure your wrist ( behind 2bones ) of your wrist.
2. if you want order 1bead / 1charm, our suggestion, please add 1cm, if you want order 2bead / 2charm, please add 1.5cm.
3. Choose your bracelet size, for example you measure your wrist is 18, and choose 1bead bracelet model, so your size is 19 / size M.