Worn by more than 200 Major League Baseball players and many more world class athletes. The strands of this revolutionary necklace from Phiten are coated with Aqua-Titanium. Its core has micro sized titanium spheres, as well as carbonized titanium. It can be worn on the wrist, ankle or waist to quickly relieve pain and stress. Recommended for sports lovers, enhancement of athletic abilities, fatigue reduction,confidence, relaxation and refreshment. Testimonial: Being a catcher for Minnesota State University Moorhead I have a lot of back and shoulder pain basically due to overuse, catching nearly 60 games a season. When I heard about the Titanium necklace from Phi-ten I must admit I was skeptical about the technology but because of the stiffness in my back and shoulder I was ready to try anything. I have now been wearing the necklace for about a year and have noticed a significant difference in my performance. After training or playing I have noticed in instances where I should be sore, I experience considerably less soreness and I feel like I am completely refreshed overnight. I love my titanium necklace and I recommend one to ANY athlete, especially baseball or softball players. -Melissa Saylor, Minnesota State University Moorhead Softball