18" tall; 10" wide; and 5" deep. Black nylon with tan accent pieces on sides & back. Padded shoulder straps and multiple pockets for school books, notebooks, calculators, pens and pencils. Net pocket for a water bottle on one side (water bottle not included) and a cell phone pocket on the other side. Large main compartment has an inner zippered pocket measuring 4 1/2" tall by 6" wide and a second pocket (not zippered) which is 9" tall by 10" wide. Second zippered compartment (14" tall by 10" wide) has a key ring clip; a 7" by 7" pocket; and two (2) mesh pockets which measure 4" tall by 3 1/2" wide. Zippered flap compartment on back measures 9 1/2" tall by 8" wide. Pack has cloth straps on back for attaching smaller pakcs or hanging items. Each shoulder strap has a ring for attaching hanging items. Shoulder straps are connected by removable strap; pack has a waist strap which can be cut off if not desired. Pack is attractive, durable, comfortable, lightweight and inexpensive.