Tabra charms are used to fasten Tabra connector chain. When selecting a charm for the chain, the size of the desired charm needs to be subtracted from the ankle/wrist/neck measurement to give you the correct chain size. If you prefer to wear your connector chain a little looser or tighter, you will need to factor this in. Typically smaller charms suit the smaller connector chains and larger charms work well with larger connector chains, but it is often a personal choice. If you have any questions about sizing, please contact us.