Built to last, CAT (Caterpillar) is known for 3 words: strong, tough and reliable. Tough-looking inside and out. Main back compartment with padded back slip pocket for a laptop. Middle compartment with two flat back panel slip pockets - zipper pocket and two mesh slip pockets. Front pocket with organizer panel of pen slots - flat slip pocket - card slots and key ring string. Side slip pocket and side pocket with zipper closure. Side compression strap buckles, Adjustable and airmesh padded shoulder straps, Adjustable sternum strap and back panel with airmesh and airflow. Easy cleanable bottom panel and has a Carry handle. Elastic front cord, Front webbing loops for attaching accessories and DNA V-belt rubber string.