Made of 600D Polyester it features a monopod locking pull-up handle. Inside the main compartment there is a padded sleeve for a 17" laptop and is spacious enough for all your books and notes. Outside features a zip pocket for phone or keys and a zip compartment for all other essentials at the bottom. The back panel features a large Velcro flap that can be used to cover the wheels to be used as a regular backpack. The backpack is finished with padded carry handle and a large mesh pocket. 13" W x 20" H x 7" D