Square. Approx 14” h x 14” w x 5” d. one flap cover with two plastic closures. Inside many pockets for organization as well as a main open area. One large laptop pocket (no padding). One outer side pocket for access when all closed, but all other pockets are inside the main cover. Water repellent nylon. One cross shoulder padded heavy duty strap with signature Chrome seatbelt buckle closure. Very good condition. Used as a work brief case for about one year. No rips or tears or stains. Heavy duty construction.