As I will run regularly (and in any weather) with my phone for sports applications, I needed a such accessories! With it, no need to hold the phone in his hand, or keep it safe when it rains, the adjustment system (scratch) and really good (it adapts to all body types) and maintains good the phone in place. Only flaw, the foam a little thick around the phone requires to repeat the same operation several times to press the button, but hey, I personally do not press the power button. For me it is a very good buy, I recommend !!