Lucky Bums Kid's Tracker Backpack A rugged backpack engineered and sized for kids offering the ideal all around pack built to last Heavy duty YKK zippers and kid friendly durable buckles set on a back with padded backing for increased airflow make this the go to all around pack Storage and straps galore on this 20 liter capacity pack with 4 storage compartments and 2 side water bottle holders plus an internal sleeve for hydration Get the right fit with the adjustable moisture wicking shoulder strap and the removable hip strap and the sliding sternum strap with integrated bright orange safety whistle Recommended for kids with torso measurement from 12-15 inches (typically kids aged 6 - 10)