I ain't gonna weigh mine: I don;t want to know. It has a sweater, knit hat, giant garbage bag, a waterproof knee-length raincoat, an MRE if I need to eat, a full waterbladder, a book, WAY too much admin stuff (paper, pencil, batteries, etc), and a bit of kit for getting a meal, or at least a pot of tea, out. It WILL get me the fifteen miles home from work.
It also has a full complement of the "use of force" continuum: OC spray, a "baton" and a backup sidearm...YMMV.
I don't need navigation stuff for this application, but you might...if I need it, I'll add it.

Hot tea and T.P. are not luxuries.