Trekking rucksack childrens backpack suitable for childrens colour red style sporty capacity 20 litres weight 058 kg height 50 cm width 23 cm depth 14 cm features removable seat address label reflective elements chest strap hip strap padded back outside pockets lid pocket mesh side pockets additional fastenings walking pole holder gear attachment points straps ergonomic shoulder straps compression straps bag feature suitable as cabin luggage iat