Yes, because there are now so great apps, which can be used to record his jogging -Runden. Once discovered, you just can not leave it - only measured kilometers are real kilometers. After not a matching bag for the mobile phone is available in every running pants, I first tried a traditional fanny pack. The inflexible belt but could not be set so that the pocket on the hip remained. In the waist I find a bag to be highly unpleasant. Actually, I thought now - though because of the appearance highly reluctant - to a version in which you can fasten the mobile to the arm. Here I came by chance to this ingenious fanny pack. Ideal for little things that you go so gladly did it. Bonbon, handkerchief, conclusions, mobile. By the stretchable material it lässst so strapped around his waist that nothing slip or wobble. Extremely comfortable to wear and super convenient.