With your palm open and facing up, wrap the measuring tape around your wrist, just above your wrist bone. Note down measurement of your wrist size. With your palm open and facing up, wrap the string or strip of paper around your wrist, just above your wrist bone. Mark where the ends meet with a pen or a marker. Next, lay the string or piece of paper flat and measure it to where you've made the mark to find your wrist size and note it down. 13 cm - Size 15, 14 cm - Size 16, 15 cm - Size 17, 16 cm - Size 18, 17 cm - Size 19, 18 cm - Size 20, 19 cm - Size 21, 20 cm - Size 23