Our Cadence LED arm band is the perfect partner to keep you safe during your early morning or late night walks, runs or bicycle rides. The push button action allows the red LEDs to give you constant lighting or flashing LED lights so you can be seen by motorists and other pedestrians. Constructed out of durable light weight nylon, that can be wrapped either around your arm or leg comfortably and is fastened down with Velcro that has a reflective patch for additional visibility. Includes two CR2032 cell batteries.