Product details Water resistant💧 Brass 18k gold Hypoallergenic Nickel free Size: 15.5" + 3" removable extender. Width 4mm Designer note: our tennis choker catches the eye with its shimmering and glittering design. This necklace is perfect for special occasions or for adding some sparkle to your everyday wear. A necklace made to make you feel like royalty! Style tip: pair this necklace with its matching bracelet!