With a small, streamlined design and internal hydration sleeve, the Osprey Katari 3 is ideal for keeping hydrated whilst on the move during walks and hikes. An innovative, ventilated mesh harness, back-panel and webbing sternum strap lock the pack down to your back, while the bite-valve is always within reach thanks to the innovative magnetic sternum strap, which can be opened and closed with one hand, while never taking your eyes off the trail.AirScape mesh backpanel with central ventilation channelSternum strap buckle with magnetInternal hydration sleeveExternal hydration accessFront zippered pocketInternal key attachment clipReflective graphicsLED light attachment pointWeight: 0.3kgDimensions: 41 x 19 x 15cm (LWD)Capacity: 3 LitresFabric: 210D Poly Honeycomb