From bike commutes to bus rides, the Marmot Bootjack 18 is a beefy little bag with polyester ripstop fabric and functional features to satisfy your on the go needs. Able to fit most 13 inch laptops in the padded, side entry internal sleeve, this roll top pack has a large main compartment, padded shoulder harness and plenty of functional pockets. Roll top closure for easy access with large main compartment. Side access computer pocket fits most 13 laptops. Internal tablet pocket. External stash pocket for on the go essentials. Internal organizer with key clip. Two external water bottle pockets. Padded shoulder harness with sternum strap. YKK zippers. Fabric is 150d Armour laminate single side phthalate free 100% polyester with 1680d 100% nylon ballistics reinforcement.