Whether its a play date at a local trail or a family vacation to a National Park. the Hydrajet 12 is the perfect junior companion for kids who can carry their own gear. An included Hydraulics LT 1.5L reservoir. dual side pockets and front stretch pocket make it easy to store water. extra layers and plenty of snacks. A mesh backpanel and sternum strap will keep kids comfortable and stable whether hiking. skipping or running down the trail.