The tried and true campus 33l gets a passing grade as the ultimate back to school backpack this roomy 33 liter backpack features four distinct compartments including a large top compartment with a padded laptop sleeve and room for books and binders a top fleece lined sunglass pocket a slim organizer pocket and a handy insulated cooler pocket for lunch and snacks the campus is available in every one of our unique prints and colors to match your unique style go forth and learnfits most 15