1,680D poly. Rear padded laptop compartment. Main front compartment for files and essentials. Open front compartment with padded tablet/e-reader sleeve. Multiple zippered pockets for gadgets and belongings. Ergonomic padded straps with zippered pocket and adjustable sternum strap. Ultra-padded air mesh back with Air Flow System. Laptop Compartment: 15.5"h x 11"w x 1"d; fits most 17" laptops. Dimensions: 20"h x 15"w x 12"d. Capacity: 2,000 cu.in./32.8 L. Weight: 3.5 lbs./1.6 kg