600D poly canvas; 360D poly twisted twill canvas Large main compartment Back dedicated padded laptop compartment Front dedicated organization pocket Side mesh pocket Metal zipper pulls Air mesh padded back and shoulder straps Luggage trolley pass through on back Laptop sleeve dimensions: 18.75 h x 14.75 w; fits most 15 laptops Dimensions: 18.75 h x 11.25 w x 4.75 d; Approx. 1 002 cubic inchesNote: Bags not intended for use by children 12 and under.