The bag makes a passable impression, even if the front Velcro is a bit too large (on the handlebar / stem). Thus, the bag remains while driving off-center on the top tube (possibly help it, something left and right to clamp to the side).
Until now I used it once in a light drizzle. Here nothing inside was wet. (In the pouring rain but I would not sure)
Delivered the bag with a small 3.5 mm stereo mini-jack extension cord which is long enough to hand the phone (above) to the opening provided at the bottom of the bag. This is useful, for example, to separate the earphone having to remove without the phone during short breaks.
For the cheap price I find this bag quite recommendable.