Silicone rubber Titanium necklace 1.Material: Titanium, germanium, magnetic&anion medical silicone 2.Any colors &sizes Silicone rubber Titanium necklaceMaterial: Made of Titanium, germanium, magnetic and anion ... -fatigue and anti-radiation, and can effectively eradicate cervical problems2>Necklace are flexible, convenient, beautiful, fashion and health. Different length, different ...