Daintynine's bracelet sizes are measured by centimetres (cm). For a snug fit, measure your wrist with a measuring tape and add 1 cm to the measurement. If you prefer a loose fit, add 2 cm to the measurement instead.
If you do not have a measuring tape, use a string and mark the end with a pen. Then measure the length of it on a ruler.
E.g. Wrist measures 15 cm. Snug fit bracelet size will be 16 cm. Loose fit bracelet size will be 17 cm.