This backpack is a revolutionary new product that combines the grab and go functionality of a wheeled backpack with the ware of four wheel, upright rolling of spinner luggage Constructed of premium ripstop material for lasting durability Four multi-directional spinner wheels allow 360 upright rolling so there is no weight on your arm Laptop compartment protects and holds up to a 15.6" laptop. Felt lined hidden pockets to protect valuables Quick change back panel technology allows for a quick access to backpack straps Stealth zippered water bottle pockets Push-button locking ergonomic handle for comfort in transport Padded shoulder straps for increased comfort 3 Year Warranty. Overall Dimensions: 20"X 13"X 11" Weight: 6.4 lbs. Body Dimensions: 19.0" x 12.0" x 12.0" Overall Dimensions: 23.25" x 13.25" x 15.0"