Black Edge-3D Bionic Band, XL (8.25 inches) The BionicBand comes in a variety of comfortable styles and several frequencies. Each frequency is exclusive and offers your body outstanding benefits. Whatever you may be looking to improve, one of our BionicBands can help. All of our BionicBands are designed to help provide energy, clarity, balance, and vitality. The Edge Frequency creates the same cellular harmony as the original frequency, only at a more intense rhythm. This frequency promotes the same sense of calm and balance, but may also increase concentration, muscle memory and flexibility. This is the perfect band to wear while studying, playing golf, or practicing yoga.