Originally Posted by StaplesHuskies
i read somewhere on here that if you use a compression bag you can get it much smaller, maybe i'm wrong though.
They're nice, and for some situations, necessary. I have a massive 0° Marmot Never Summer bag which is 18" long in the OEM stuff sack. I can get it to about 14" long so it easily fits horizontally in my pack. I think the Incubator would be great compressed a little to save some space. My 40° is fine in the stuff sack, but I think I'll get a 0° soon and use a 15L compression sack.
I always try to use the manufacturer's stuff sacks when possible, and when using compression sacks I don't get too crazy with it just to say "look how small this thing packs!" - to take it easy on the down.