How to tell difference of this computer bag ? Being different from an ordinary laptop bag, a excellent laptop bag firstly should have the enough four side intensities and the protection insulation, which offers a safe and comfortable "love nest" for the computer bag, while the ordinary laptop bag is unable to isolate the backlogging and dashing from the outside effectively because of the oversized space and the soft frame design. Next it should have the reasonable fitting to separate the bureau design. For instance the power source should be put aside nearby the laptop in order to avoid accident extrusion. At the same time, the good laptop bag package should also have certain waterproof and radiation protection ability.You have to pay special attention to the outside covering protection of the computer bag , so you must choose an appropriate in inner package, especially for those quite frail outer covering (for instance the SONY VAIO series, some colored notebook outer covering). You should choose an inner computer bag package of soft material for protection, and avoid incisive objects. From http://www.niceindustry.net/products.asp After you read this articles about computer bag,I think you will learn a lot about how to maintain laptop bag. And I am also glade you can get some point from this articles. Good luck.