The two-ball Beach Ball Bracelet is made of pure 925 sterling silver. Can be worn by itself or to complement the one ball Bracelet. The ball unscrews for easy on/off use and safty from being lost. Original oval-shaped for maximum comfort on your wrist. Sizing is best done by measuring your wrist and adding 1/2-3/4". Generally speaking a size 7 is average wrist size. Free size exchange when returned unworn. Ships in a box. This bracelet is a very classic, yet elegant piece of jewelry that is timeless in wearability.