POWER BALANCE bracelets contain two Mylar Hologram"s which are embedded with frequencies that react with your body"s electro-magnetics 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.