With the Lucky Bums Cricket Backpack, kids get a dual purpose pack that serves them well on the trail and in the schoolyard. The 18 liter capacity pack has all the features of a trail pack including plenty of storage compartments, padded air flow back panel, moisture wicking shoulder strap with integrated safety whistle, and durable 600D Honeycomb Nylon Ripstop with PU Coating. For the schoolyard the pack has the durability to handle the drops, drags, and dribbles plus an internal organizer to hold pens, pencils, and assorted supplies for the classroom. A great pack for the elementary school student that just can't get enough of the outdoors. Lifetime warranty against material defects and workmanship.