100% waterproof heat welded seams Durable reinforced PVC fabric Roll-Top closure with adjustable straps Ergonomic, adjustable shoulder and waist strap Padded and ventilated back panel Removable laptop sleeve Fits Up to 17" Laptop Large waterproof pocket Contrast zipper and webbing Dimensions: 25.5" H x 14" W x 7.5" D Volume: 40 Litres/2,440 Cubic Inch Decoration process: Screen printing and Laser etched patch