I bought this for use with my iPod Touch. The transparent material is too thick to allow the touchscreen to detect keystrokes, and the thicker black material obscures the main button.
So basically, if you go a run, you need to make sure everything is running, at the right volume, before you head off, else you need to remove the ipod from the sportsband to make adjustments.
perfect size for my touch diamond 2 phone, however two major problems, the velcro hardly holds at all, and is not long enough to go around my (ordinary) 14" circ. upper arms.
shame, good quality otherwise.