Sterling silver is a relatively malleable metal. All of our bangles, including expanding bangles, have some flexibility in the sizing because they can be shaped gently in and out a little bit. We use centimetres rather than inches for measuring because it gives a more precise range of sizes.
Small: to fit wrist circumference 15-17.5 cm; internal diameter of the widest part of the bangle: 5.7 cm.
Medium: to fit wrist circumference 17.5-20 cm; internal diameter of widest part of the bangle: 6.2 cm.
Large: to fit wrist circumference 20 cm and above; internal diameter of widest part of the bangle: 6.7 cm.