Rubberized 600D poly face-coated. PU Rolltop folds under top cover with a heavy-duty metal hook closure. Water-resistant clear-coated mesh pocket under top cover. Two side zips for quick access to main compartment and laptop sleeve. Large center storage area. Deluxe organization panel. Adjustable sternum strap. Padded straps with daisy chain details. Integrated luggage trolley pocket on back. Laptop sleeve: 20 h x 11 w; fits most 13 inch laptops. Dimensions: 20 h x 12 w x 5.9 d. Capacity: 1 373 cu.in./22.5 L. Weight: 2.49 lbs./1.02 kg. Note: Bags not intended for use by children 12 and under.**