Several mfg.s make stuff sacks with fleece on the inside. Use it as a clothes bag, flip it inside out at night. I did this until I got my spare clothes so sparse as to not make a good pillow. I now use a Sea to Summit Aeros. Very light, very comfortable and adjustable with EASE. I'd cut a square of close cell foam ( 2-3 oz. ) to sit on instead of the chair. You can roll this up in the stuff sack to supplement the pillow , too. My kindle weighed as much as a paperback or more. To me, I have to have something to read, so I'll take the penalty. I also have to haul some of my wife's gear, so fitness is more my thing than losing every oz. possible.