Power Balance bracelets contain two Mylar Hologram's which are embedded with frequencies that react with your body's electro-magnetic field. When the static Power Balance Hologram comes in contact with your body's energy field, it begins to resonate in accordance with each individual's biological energy system, creating a harmonic loop that optimizes your energy field, maintains maximum energy flow while it clears the pathways so the electro-chemical exchange functions like the well-tuned generator it was designed to be, resulting in immediate improved balance, increased core strength, greater flexibility, increased range of motion and overall well-being.