This messenger bag is made of thick durable canvas, PU leather for long-term use.which it is heavy duty.It can protect your laptop and books entirely. 15.8 x 5.1 x 14.2 inches; Fits up to 15.6 inches laptop.Special design laptop compartment with Telescopic belt provides more protection for your laptop. Large capacity with various pockets that fits all of your stuffs you need. 1 zipper pocket on the flap,1 large zipper pocket with 4 card slots, 3 pen sleeves and 1 open pocket,2 side pockets for umbrella,1 back zipper pocket with leather clasp.Internal access to 1 main zipper compartment, 1 padded laptop compartment fits 15.6 inch laptop and 1 zipper pocket keep things organized.