Silicone rubber Titanium necklace 1.Material: Titanium, germanium, magnetic&anion medical silicone 2. ... -fatigue and anti-radiation, and can effectively eradicate cervical problems2>Necklace are flexible, convenient, beautiful, fashion and health. Different length, ... that relax the neck and shoulders, ease the physical and mental, Increase the body's energy transmission and improve strength, endurance ...