Sometimes all you need is a bottle of water and a little room for fuel and some cash for a post-run pub session. The Dyna Solo is built to fit the female form to provide bounce-free stability and comfort, carries enough water for any training run, and works great for staying hydrated between aid stations. Featuring just enough storage for the necessities, a touch-compatible phone pocket, a comfortable and elastic hipbelt, and an included 570 ml BPA-free bottle, it's sure to keep you moving down the trail.