I carry a light bag/bivy and a ccf pad just in case of an unexpected night out (about 2 lbs). A decently warm puffy (and usually puffy pants), along with an active mid-layer and the usual stuff- first aid/fire/headlamp/navigation etc. A pretty complete kill kit. All goes on a hauling frame (Stone Glacier Krux) which in itself weighs 2.5 lbs with a smaller bag (SG Avail stripped of it's frame/waist belt and shoulder straps) that weighs a pound. Often a tripod (2 lbs) and my trekking poles are typically lashed to pack as well (unless I'm bent over w/ a load of elk meat! :)). A liter of water and a filter and about 1.5 lbs of food (a little extra just in case)
Soooo- just a wee bit over 20 lbs, BUT with the Krux frame I can honestly say it feels very light
