This elastomer rubber bracelet has concentrated micro-sized Titanium Spheres embedded in it. It's sporty style and moisture-proof material makes it ideal for athletic activites or casual wear. One size fits all. 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: I am 44 years old and I am a self employed builder. I have been building since I graduated from college. I am also an ex amateur bodybuilder, so my back and joints have taken a beaten for many years! When I was 28, I had back surgery for a herniated disc and a had a partial laminectomy to access the disc. I have lived with muscle tightness and pain ever since. There are many days that it is hard to just roll over in bed because of the soreness. I'm like the tinman, it takes me a while to get moving every day and lately it has been getting worse so I have been desperately seeking for a muscle rub or something that will help. My wife got me a gift certificate to a local acupuncturist which because of your product I have not used yet. My sister got my father one of your bracelets for Christmas and I asked what it was all about. Once they told me I ran out to get one along with one of your necklaces. I didn't believe it would help but I was willing to try anything just so I can continue with my profession. Let me tell you and any one that reads this, I am amazed at the results. I do not have nearly the soreness in my back or joints that I used to have I do not quite understand how this works or if its all in my head but I feel a million times better!! I will always have to be careful with my back but I am just overjoyed with your product,. It has solved a lot of my problems. When the day comes that maybe I can not still build, I will be calling your company for a job cause this product works!! Thank you