Cycling backpack childrens backpack suitable for childrens colour blue style sporty capacity 10 litres weight 044 kg height 37 cm width 24 cm depth 16 cm features key holder hydration compatible raincover reflective elements chest strap padded back internal pockets inside pocket outside pockets front pocket mesh side pockets additional fastenings safety light loop straps ergonomic shoulder straps padded shoulder strap main compartment feature f