There are different sizes to choose from. It is important that you measure and choose the correct size. For bracelets you need: One roll of normal transparent tape. One ruler. Measure the wrist you want to wear the bracelet at (left and right wrist size can differ slightly). 1. Pull out tape and put around your wrist 2. Put your little finger in between tape and wrist 3. Measure the length of the tape with your ruler If your wrist is just between two sizes, we suggest you go for the larger size.