4 in 1 design! The versatility of this bag provides multiple carrying options.  Use it as a portfolio, a messenger bag, backpack, or a sling bag.  Large main compartment, RFID zippered pocket, rain flap over front zippered pocket, trolley strap.  Zippered, padded computer compartment (fits up to a 17" laptop) opens flat to expedite airport security check-in includes a tablet pocket (fits up to a 10” tablet).    5.25" W x 12.5" H x 16.25" L