Power Balance Neoprene Wristband (Color: BLACK Size: LARGE) Performance technology that uses holograms embedded with frequencies that react positively with your bodys natural energy field When the hologram comes in contact with your bodys energy field, it allows your body to interact with the natural, beneficial frequency stored within the hologram resulting in improved energy flow throughout your body Sleek styles are crafted from 100% neoprene Comfortable spandex lining that adds extra softness and stretch Perfect fit for any of the days activities * Helps promote balance, strength, and flexibility