Tumi Alpha Bravo Navigation BackpackModern and versatile, this backpack is the ultimate everyday bag. It's ideal for commutes to work or school, and for travels that take you further afield. Zipper expansion allows for extra room when needed, and a multitude of organizational pockets for everything from your laptop to your phone ensures you can easily pack it all in and carry it in comfort. The addition of interior and exterior daisy chains makes it compatible with TUMI+ accessories to