The Osprey Jet 18L backpack has been designed for the practice of hiking, alpine skiing or biking with total comfort and freedom of movement. It offers multiple compartments and pockets to carry your mountain equipment in an organized way. This hiking backpack is compatible with the hydration bag and the special size for children makes it very easy to carry. The open mesh with EVA foam on the back facilitates ventilation. The harness is made with fleece without border and the chest strap includes a safety whistle.The lumbar strap also has a breathable mesh so you never feel wet. These straps allow a comfortable fit so the backpack does not move while you run, climb or jump with total freedom of movement with this mountaineering backpack.We want to inspire young people to enjoy the outdoors and the Jet is our way of helping to achieve this.We know by giving children the same level of pack fit and function as their grown-up counterparts that nothing will stop their adventures.The Jet equips your child with a fully featured daypack that´ll rivals any adult sized Osprey packs