Bracelet is gold filled. A 1/2" extender for size adjustment is added to all bracelets. How to find your size: ◦ Wrap a measuring tape around your wrist then add 1/4" or 1/2" to the measurement depending on the desired fit. ◦ If you don’t have access to a measuring tape wrap a string or floss around your ankle & measure the length with a ruler. Sizes: Bracelet Sizes: -3.5" 0M to 3M Baby -4.0" 3M to 9M Baby -4.5" 9M to 18M Baby -5.0" 18M to 5Y Girl -5.5" 5Y to 12Y Girl Baby Mini Circle Bracelet