Attaches to your belt loop, back pack or just about anything you can think of! The Neoprene case stretches to fit small cell phone. Think outside the box and store your small MP3 player inside! The Neoprene case is perfect, and will accommodate a MP3 that is not larger that 3 inches. Hook the case to your purse, back pack, belt whatever you can think of. The case can store your ear buds, and smaller USB cable.