Actually nonsense - Stay away!

Actually, total crap!
Operation during walking, pedaling or the like is actually not possible because the carrying by the upper arm to not suitable. While the iPhone can operate through the film, but it is very inconvenient.
The Velcro is much too short. Athlete with normal upper arm are defined already have difficulty to find a good seat, because the strap is too short. The neoprene itself is indeed elastic but with me it constricts the blood supply but very much on. Sometimes I think, to sit at the doctor and let me remove blood ;-)
I no longer use, anyway.