Measure your wrist with a tape measurements or a strip of paper just below the wrist bone, where you wear your bracelet. If you are using a strip of paper when you are measuring your wrist, mark your size with a pen then use a ruler to measure the length. If you prefer fitted bracelet, when you are ordering your bracelet please order this exact size. If you prefer loser fit then please order one size bigger. Please check our size guide for the conversion from cm to inches.