Dimensions: 18.8 x 5.1 x 13.7 inches; Fits up to 17.3 inches laptop. Still more room for you to keep 2-3 days summer clothes, ideal design for travel, business trip, shool life or work. | Three carrying styles. You could use it as backpack shoulder bag and messenger bag. Also the straps can be hidden when you use it a messenger bag and shoulder bag. Why you should choose this bag: one bag pay and getting three bags use! | Four outside pockets, convenient to organize your items you want to carry, Just forget the pain point of finding things anywhere! | Roomy laptop compartment and accessory compartment.Special design laptop compartment with Telescopic belt provides more protection for your laptop. Still keep 3 days clothes for traveling. Roomy enough for your need. | Lightweight design is easy for carrying. The top grab handle offers quick grab-and-go style. Ergonomic design ensures the dispersion of gravity of the fulled bag.