With dual main compartments and an ultra-padded air mesh back this casual style pack is an excellent choice for school or work. 600D printed poly; 600D shadow ripstop poly Large secondary compartment for belongings and essentials Main compartment with padded laptop and tablet/e-reader sleeves Easy-access front sleeve pocket Front zippered pocket with deluxe organization panel and key clip Fleece-lined valuables pocket Ergonomic padded straps with adjustable sternum strap Laptop sleeve: 15.5 h x 11.25 w x 1.5 d; fits most 17 laptops Dimensions: 19.5 h x 14.75 w x 9 d Capacity: 2 400 cu.in./39.3L Weight: 2 lbs./0.9kg