Help me find this sports wrist band/necklace that baseball players used to wear

Circa 2007-2010 there used to be a brand of sport wrist band and necklace that you could wear that thoeritically "helped" reduce joint pain and other body aches I think due to something that was in the material that those things were of. Baseball players wore them during games I think.

For the life of me I can't recall what the name of that brand was. Not sure if they still make it, or if there are other brands out there now that do the same thing. Can one of you good folks on the OT help a baw out?