Daypack childrens backpack suitable for childrens colour green theme stars style casual weight 055 kg height 40 cm width 26 cm depth 16 cm features key holder address label reflective elements removable accessory bag chest strap water bottle pocket padded back internal pockets insulated cooler pocket valuables pocket outside pockets front pocket mesh side pockets straps ergonomic shoulder straps bag features suitable as cabin luggage iata norm