Hard bracelets standard width is about 60 mm and height is 55 mm.
For flexible bracelets, to ensure you select the correct
sized bracelet we always recommend you measure your wrist before ordering.
To do this we suggest finding something flexible such as a piece of paper, string or a flexible tape measure to wrap around your wrist so that the fit is snug but still comfortable. If using paper or string then make a note of where this meets and measure the length to get your accurate wrist size - we always recommend adding between a quarter to half an inch to this measurement when selecting a bracelet for comfort.