If you need to carry your laptop with you but prefer to keep it secret then we have the answer for you. A quick glance at the 1713 and you might think it was our standard 1428 DJ bag. But take a closer look and you'll find a built-in padded laptop sleeve. This bag includes a posterior convertible zipper section, so that you can slide in your books when it is zipped or attach to your luggage when it is unzipped. This new model features additional pockets for accessories, and an extra buckle on the front flap to keep your belongings secure.