When the school year starts you need a pack that can survive being stuffed in a locker, used as a pillow in the park, and dragged onto the bus. Designed with durable recycled fabrics, deep main zippered compartment, external padded laptop/tablet compartment, and internal zippered accessory pockets for organization, the Chiquillo can handle all that and more. The 30L is the bigger of two K-12 backpack with more features and more carrying capacity.