Since prehistoric times, the healing and holistic properties of copper and magnets are believed to relieve arthritis pain, improve circulation and provide greater energy. Our California artisan handcrafts this curved pure copper cuff bracelet the old-fashioned way, using the purest copper available, jewelers brass (an alloy of 85% pure copper, 15% zinc) and German silver. The pure copper cuff bracelet is adjustable to fit most. 2.5" inside dia.