1.Main material in 600D polyester 2.Designed for campus, city or outdoor trail 3.Two large main compartments, with double zippers, large opening 4.A special front pocket for CD-player 5.Interior organizers 6.Shoulder straps padded with air mesh tex 7.Quick carry handles padded with wicking mesh 8.Fully padded back panel 9.Ergonomically shaped shoulder straps with completed-mould elastic air-circulation shift control, disperse weight from your back