1.Material: 600D polyester ripstop with waterproof fall sides 2.Lining: waterproof PVC 3.Disigned for campus, city or outdoor trail 4.Two large main compartments, with double zippers, large opening, idea for books or cloth 5.A spacious front pocket for CD-player and with interior organizers 6.Ergonomically shaped shoulder straps with completed-mould elastic increase air circulation 7.shift control and desperse the weight from bag 8.Quick carry handles padded with wicking mesh 9.Fully padded back panel