Brassard lightweight, comfortable and fits perfectly to the arm (arm mini tower measures 25cm in turn max arm 35 cm). I ran with my iphone 3 inside, strong enough for her to hear without headphones, with the nike free application: touch controls are effective, the GPS has captured all the time, the home button is easily accesible, by cons if you want while the app is running up the volume on the side there is no access, we must prepare his iPhone before inserting into the case or for those who run with headphones have a sound command over the wire. No sweating in the pocket or fog, I recommend it especially considering the price.