Flexible and elastic magnetic joint wraps incorporate superstrong magnets with alternating polarities and incorporate bio-ceramic fibers to provide enhanced magnetotherapeutic and far-infrared effects. Magnetotherapeutic joint wraps that are flexible and elastic incorporate superstrong magnets as well...http://www.google.fr/patents/US6652446?utm_source=gb-gplus-shareBrevet US6652446 - Deep heating magnetic wrap for joints and tissue
