I packed all my clothes in this one pack-it-folder.  I have 3 pair of pants and 4 shirts in it, and it fits exactly inside my Ebags Mother-Lode backpack. PERFECT!  Love the color too.  This is the first time I've ever used a packing system, and its the best thing you can do to organize your carryone luggage.  I'm using pack-it cubes (another brand), for for undies/socks etc.