North Face Fleece Pullover
Functional and light at 7 oz.
Not as light or warm as Theresas cool down vest, but I like to have my sleeves covered. Maybe I’ll explore the vest some day once this is worn out.
At night, I make a pillow out of my sleeping bag sack stuffed with spare clothes and wrap this aound the outside of the stuff sack. Nice fleecy pillow… 
REI has these for $55.