This bracelet are unisex and can be worn by men and women. It is adjustable and will fit almost any size wrist. Made of copper and magnets.  Copper Healing Properties:As a conductor of energy, when used with earthly crystals it intensifies, enhances and channels their properties. Copper is thought to assist the body with repairing tissues, oxygenating the blood, easing arthritis, strengthening the female reproductive system and increasing vitality.