Specs: approximately 11” wide by 5” deep and 11” tall. Straps are adjustable with a convenient grab handle along the top. There is a removable shoulder strap also. It features 2 exterior side slip pockets and inside has a slip pocket and 2 pen pockets. The “anti-theft” nature of this design is that the main entry to the interior of the bag is through a zipper that lies against your back.