1200D Poly with Rain Defender durable water repellent and Duravax base, Large main compartment, Zippered organization compartment for additional storage, Contour fit shoulder straps, Padded air-mesh back panel, Dimensions: 12.5" x 18.5" x 9", You will always perform at your best with gear from Carhartt. This Legacy Classic Work Pack is made from 1200D Poly with Rain Defender durable water repellent and Duravax base so it's as tough as you need it to be. This rugged pack also features a large main compartment to store books, files or your computer, contour fit shoulder straps, and a padded air mesh back panel for top-notch comfort and convenience. This Carhartt pack is up for the toughest jobs.