The Granite Gear Trailster Wheeled Backpack is a versatile pack to get the heavy Items from class to class. Texts, laptop, lunch and more. Whatever you've stuffed inside, you don't have to lug it around on your back. Pop the aluminum pull handle up and wheel it around through the halls. Minimize back pain on heavy load days, as this boss offers 39.5 liters of space. On lighter days, or High traffic moments, utilize the shoulder straps. Features of the Granite Gear Trailster Wheeled Backpack Rugged wheels and wheel housing Durable aircraft aluminum pull handle with rubberized grip Repelaweave fabric with taurpalite bottom for maximum protection against elements Ergonomic maxload multi-compartment design Barrier zipper tricot lined pocket for valuables Tuck-away, breathable load absorbing shoulder harness Load stabilizing sternum strap Fully padded back panel Adjustable compression straps Dedicated gear Tech computer pocket Fits most 17in. laptops Dual stretch mesh hydration pockets Padded comfort top handle Multi pocket organizer