Measure your right wrist where you would wear a watch.
No tape measure? Fold a narrow piece of paper or string gently around wrist.It should be loose enough that you can place a finger between the string and your wrist. Then check the length with a ruler.
For borderline measurements make sure the string is not tight (this would create an uncomfortable fit).
When in doubt, order the next largest size. If necessary, the bracelet can be squeezed together to make it a bit smaller.
A bracelet that is too loose will twist around.
Note: An extra cuff is used on the quartz bracelets making these bracelets measure ½ inch larger than those with gold or silver terminals.
Example: If your wrist measures 71/4 order a size SMALL in a quartz style.