Size:7-1/2: 56-58cm/22.04-22.83in7-3/4: 58-60cm/22.83-23.62in8: 60-63cm/23.62-24.80in In order to best determine fit, it may be helpful to compare our garment’s measurements to a similar garment you already own. Lay your garment on a flat surface and take all measurements from the outside of the garment. Click here to check out our Garment Measuring Guide. If you are still confused, you can Contact Us to help you choose the size.