The beautiful locket opens up to allow charms to be put into them. Simply choose the charms that are a few of your favorite things and insert them into your heart. From good luck charms, initials, birthstones to religious symbols, they will represent what is important to you. The locket is easy to open and close and stays securely closed with internal clips and magnets. You will be able to change charms as easily as changing your necklace. The necklace measures approximately 16 inches with a 2 inch extender. The locket is 30mm in diameter. To make a complete Floating Locket, choose your base (bracelet, necklace, or key chain), and then choose the charms that you want. Open your locket and add the charms. You are done and ready to wear you new floating locket jewelry necklace!