very convenient! In the small and inconspicuous belt bag really fits much good stuff into it! I like to go walking and jogging power between times. Especially on warm days when I can walk without a jacket, I need as a small bag for my phone because the sport pants either have no bag or I feel the weight of the phone attracts the same down :-) Have my old belt bag tries but that's really more for the amusement park! The bounce while jogging up and down while walking, it may happen that I have not been there at some point, where it belongs :-) This Gürteltasche claimed is composed of an elastic material that stretches well and a cell phone and keys or similar offers enough space. I admit that I have always fumble something to get my cell phone (iPhone5s) closed with the iPhone on a dongle and headphones get into the small bag at the other end. The material because you have to pull over rather than the instrument insert. For this but my iPhone sitting then bombproof, does not wobble and stays where it belongs! The elastic strap has the great advantage that this belt bag fit snugly without constricting and there is where I wanted them and not me as the moon orbits the earth :-) I would buy it again!