Very nice and lightweight trail backpacks with integrated hydration systems. Ideal for long-distance runners and trail runners.
The backpacks are close to the back and fit well so minimal movement is guaranteed during running. The easy hose allows the runner to keep his or her moisture balance in good order.
The backpacks alternately have drinking bags with 1.5l or 3l. Advice is to regularly clean the drinking bags and let them dry thoroughly.