Power Balance® is a performance technology that uses holograms embedded with frequencies that react positively with your body's natural energy field. The fabulously colored and fashion friendly bands are already phenomenally popular in the USA with athletes and celebrities such as Shaquille O'Neal, Lamar Odom, Rubens Barrichello, Christiano Ronaldo, and DiCaprio using it. Must be good if David Beckham swears by it! You must have seen sports people from all sports wearing these. We think they look great whatever your chosen activity. Worn by Athletes, tennis players, golfers, badminton and squash nuts.