This 5mm wide, hand-hammered bangle bracelet is available in three sizes: Small (2.1/2" diameter), medium (2.3/4″), and large (3"). A size medium will fit most wrists. Materials: Sterling silver (.925) or oxidized (black) sterling silver. All materials are hypoallergenic. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish. This bangle bracelet was designed in San Francisco and is handmade in our Upstate New York production studio.