Bracelet Sizing:Size S: Fits 16.5-17.5cm (6.50-6.89in) wristsSize M: Fits 17.5-18.5cm (6.89-7.28in) wristsSize L: Fits 18.5-19.3cm (7.28-7.60in) wristsSize XL: Fits 19.3-20.3cm (7.60-8.00in) wrists.Measure with a soft tape above the wrist bone for accurate sizing; if between sizes, choose the smaller option for a snug fit.