At 39.5 liters, the Trailster is the largest pack in Granite Gear's CampusCollection. A pack of this size can comfortably accommodate textbooks,laptops, binders and more. Fortunately, carrying these supplies is made easythanks to the Trailster's rugged wheels, and aircraft aluminum pullhandle.Understanding that wheels aren't always the most convenient method oftransportation, Granite Gear also included a simple yet supportive suspensionsystem. This system is made up of high density shoulder straps that tuckneatly away behind a well-padded back panel. While the Trailster excels withits intuitive and versatile carrying options, its features for keeping yoursupplies safe and well organized are equally impressive. One such feature isits Max-Load multi-compartment design. To help you pack more effectively, theTrailster is split up into five compartments and two stretch mesh hydrationpockets. These compartments are home to smart features like a 17-inch paddedGear-Tec laptop sleeve and a multipocket organizer. There's even a water-resistant stash pocket, that's lined with soft Tricot to protect yourelectronics. Additionally, the trailster is constructed with tough and water-resistant fabrics known as Repelaweave and Taupalite. These materials make theTrailster very durable and uniquely useful pack for those rainy days oncampus. With its impressive combination of capacity, transport options andsmart, protective features, the Trailster is the ultimate companion for yourlongest days on campus.