This backpack has a rear compartment that is velour-lined that fits a laptop up to 17”, tablets up to 11" and has a large, zippered mesh pocket for accessories. The exterior front, felt-lined, hard-shell compartment with inner mesh pocket protects eyewear. The middle velour-lined compartment has a deep file pocket for files and books, with exterior side mesh pockets that hold beverages for easy access. The padded back panel has a pass-through strap for stacking on a rolling bag and Add-a-bag feature allows bag to slide over extended handle of wheeled luggage. The high-density foam padding and air-flow channel on the back keeps you cool and comfortable