The Joy Factory aXtion Night Run Armband for Small Smartphones Up to 4.9-Inch Sreen ( 4.87 x 2.32 x .37), Black Keep your night run safe and fun with an aXtion Night Run Armband from The Joy Factory. Reflective Material for Safety - Make sure you can be seen by oncoming traffic during your evening runs. Secure your Cables - No one wants the hassle of headphone cables bouncing around while they run. Secret Compartment - No pockets? No problem. Inside the aXtion Night Run Armband is a special slot large enough for holding a credit card, ID card, or key. Secret Compartment - No pockets? No problem. Inside the aXtion Night Run Armband is a special slot large enough for holding a credit card, ID card, or key.