Osprey Dyna 6 Women's Running Backpack - Inspired by top runners, this roomy hydration vest is great for getting started and will give you confidence on longer runs. The Osprey running backpack prioritizes comfort, it is soft and breathable. In the front there are two pockets for flasks and in the back there is a pocket for a reservoir, which is not part of the vest. * volume: 6L * material: 320 GR Nylon stretch mesh * bluesign® product – environmental protection and safety during the production process * DWR finish * 100% recycled material * dimensions: 36 x 36 12 cm * weight: 400 g * two extra elastic mesh pockets for flasks (flasks are part of the package, 1 500ml flask) * breathable back panel * four lower elastic mesh pockets on the strap * vertical front pocket for valuables or phone * front panel zip compartment * adjustable snap closure at the front * attachment for trekking poles * safety whistle * zippered pocket in the back for holding a water bag (the bag is not part of the backpack) * zippered pocket in the back * adjustment range (rib measurement): for size S it is approx. 65-75 cm * running vest, sports backpacks