The Sports Workout armband is made to safely carry your device while you are jogging or are at the gym. The armband comes with a velcro strap on top to let you adjust the armband according to your arm size. Clear front screen provides quick and easy access to your incoming phone calls as well as shows you tracks being played on your MP3 player. The arm band is lined with smooth and soft neoprene material and is made to fit all devices. Armband Fits any armb size between 11inch up to 19inch. Armband comes with a matching extension.