Stupid question, but I see these on packs all the time and don't know what specific use they're meant for. I tend to just use the pockets. I know there must be some extraordinarily simple explanation that my inexperience of the outdoors can't grasp. The one on the right I can imagine clipping a bunch of things on, and the left one I can imagine putting something in there and having it lashed down, but is that it's designed for use? Any advantage of one system over the other?
