In order to have a custom fit we have provide some guidelines for your use:
First measure your wrist and determine whether you want your bracelet to fit snuggly or allow it to move freely around your wrist. Bear in mind that the links contain springs which allow it to expand as you slip it over your hand.
Each link is 3/8 inch long. Remember too, that Italy uses the metric system and we use inches, so the conversion naturally creates some discrepancies.

Some sizing examples:
A very small child might require a 5 inch bracelet, you could select 13 links creating a 4 and 2/3 inch bracelet, 14 links provides 5 and 1/3 inch bracelet.