When measuring your wrist/finger, stay as close to your hand as possible, like so (the circumference in the picture is 6.5 inches.) When ordering, please specify the exact number on the measuring tape, we will make sure your bracelets/rings will fit you nicely. You can specify your wrist/finger circumference in either centimeters or inches. Please also specify whether you prefer your bracelet/ring a little looser or tighter. If you don't have a measuring tape, use a piece of string to measure your wrist/finger and lay the string back out on a ruler to get your measurement in inches or centimeters.