Bracelet Sizes: Our bracelet sizes are determined by wrapping a flexible tape measure inside the bracelet, completely around and across the opening. If the reading on the tape measure shows 7", for example, that is the size we assign to it. If a flexible tape measure is wrapped completely around the wrist, in a comfortable fashion, where the bracelet is to be worn, the reading on the tape should indicate the bracelet size. Most bracelets can be opened up about a 1/4", or closed down about a 1/4" in order to get a good fit. However, those with inlaid stones, or similar construction, cannot be opened or closed in any amount without damage to the stones!