Hiking backpack childrens backpack suitable for childrens colours red blue style sporty capacity 18 litres weight 06 kg height 56 cm width 30 cm depth 28 cm features reflective elements address label hydration compatible chest strap padded back outside pockets lid pocket mesh side pockets additional fastenings walking pole holder straps padded hip belt ergonomic shoulder straps padded shoulder strap bag feature suitable as cabin luggage iata nor