After reading "blinded by science" a very well known book. I read about magnetics helping wifh healing of bones. I have arthritis in my left hip so i thought why not try a bracelet and a mat to see if it will help! Now i cant say for sure as i have changed my diet and started doing more strength work but the pain has pretty much completely disappeared. I noticed it wilin the first 2 weeks of wearing the bracelet i would definitely recommend and you wont see me not wearing this now. I got a size medium and you can bend the bar to how snug you want the fit. Thank you so much for your speedy service also. Great product highly recommend.