COCO Park Couple Bracelet Stainless Steel Mechanical Chain Carbon Fiber Health Care Magnetic Stone Bangle Length:195mm(7 5/8");Width:8mm(3/8"); Main Material:Stainless Steel+Energy Magnetic Stone+Carbon Fiber; Contains no nickel. It is safe enough to wear. The Energy Magnetic Stones make the bracelet not only jewelry but also health care product. Last longer than other material jewelry. Anti-perspiration, waterproof, durable,fadeless, allergy free. Comes with a beatiful velvet printed brand name "COCO Park".Best choice of gift for Birthday,Wedding, Anniversary,Stocking Stuffers, Graduation, Christmas, Valentine's Day and any special occasions.