I like to walk home from the office. But where to put keys, cell phones, purses? So I looked around for running backpacks. It was important that I as no sack on his back had who kills me when running. Therefore, chest and stomach straps were a prerequisite. And 30 euros I did not want to spend so well. The Kimood (I have it in blue) appeared to me as exactly right. That part is easy, the straps and the plastic probably will not last a lifetime, but beiher holds the Kimood what it promises. The straps are easy to adjust and maintain. In my two mobile phones including chargers, the purse, the keychain and even a pair of trousers fit in well. Nothing schlappert on their backs. A small disadvantage and a wish: 1. The straps seem to rub on running clothing. My running shirt fray at one point. 2. A few reflective light strips I'd like that. Then 5 stars would be there.