Built of 1200D Poly with Rain Defender ® durable water repellent and Duravax™ base. 2 mesh side pockets. Large main compartment to store books, files and a computer. Dedicated tablet sleeve. Zippered organization compartment for additional storage and room to store power cords and accessories. Contour fit shoulder straps. Padded air mesh back panel. 12.5"w x 18.5"h x 7"d.