600D poly canvas (solid); 600D heather poly (heather). Main compartment with padded laptop panel. Interior organization pockets. Front slip pocket. Adjustable, detachable, padded shoulder strap. Web handles. Luggage trolley pass through on back. Laptop sleeve dimensions: 8"h x 15"w x 1"d; fits most 15" laptops. Dimensions: 12.5"h x 16.375"w x 4"d; Approx. 819 cubic inches. Bags not intended for use by children 12 and under.