Eliminate the bounce of a cumbersome pack and instead focus on setting a new trail FKT with the Osprey Packs Dyna 15 Hydration Pack. Proving that less is more, this true vest-pack provides bounce-free stability and comfort as you log mile after mile on your run. Its durable nylon design holds up against encounters with rough canyon walls and snagging branches, while the hipbelt wrap with zippered pockets not only stabilizes the ride, but also keeps the essentials right at your finger tips. An included Hydraulics 2. 5L reservoir with attached hose and sternum magnet frees up your hands for easy drinking when you're in the middle of a lungbusting adventure, and the zippered main compartment and multiple pockets ensure you bring along your gloves, hat, headlamp, extra layers, GPS, and any energy gels you might need during your trail run.