The reversible Messenger Bag measures approximately 13.5″h x 9″w x 4″d. Each side has 2 open pockets for a total of 8 pockets. There are no zippers in this bag as the flap “closes” the bag. The adjustable strap extends to 45″-47″, varying a bit from bag to bag. The laminated cotton fabric is quite durable (I’ve been carrying my bag daily for over 5 years!), and easy to clean…wipe with a wet cloth!