Ultimate Direction Fastpack 15Whether you run commute to work or want a little extra gear capacity (more than 20 liters, in fact) for long adventures in the mountains, the Ultimate Direction Fastpack 15 has you covered. Features Large stretch mesh pockets on the back of the pack add an extra 6 liters of volume to stow extra layers or a spare pair of shoes Main compartment combines a roll top closure with a nearly full length zipper that provides unfettered access to your gear Roll