This pack was designed as part of a group of packs The North Face did a few years back called the Mountain System. It is a small pack that can be used on it's own, or, connect with the clips in back to a larger pack.
Measures approximately 14" tall x 10" wide x 6" deep. Features bungee front attachment, dual velcro front attachments, dual weather shielded zippers, adjustable shoulder straps.