The "Chameleon" Necklace has a Magnetic Base to interchange Charms as youd like! Definitely a MUST HAVE for any Golfer! Just pop out the center disk and change up your look!! Chameleon magnetic necklace seamlessly fits any 25mm Navika ball markers to make it a polished fashion jewelry piece. Stainless steel necklace chain is 16” to 18” adjustable length. Magnetic necklace pendant is encircled with Austrian crystals to add some bling when your ball marker is in play! Navika USA Inc. conforms with CA PROP 65 which ensures consumer safety from toxic chemicals and thus the magnetic pendant is Lead Free and Nickel Free. Each Chameleon necklace is beautifully packaged in a windowpane gift box.