Can anyone share what their normal packed dimensions are for the Incubator and Burrow Econ 20? Maybe post some pictures next to the Nalgene bottle or some standard size item?

I’m not that familiar with what to expect from lower-temp down quilts.

Right now I’m working with heavy (and big!) synthetics (Marmot Trestle 30 sleeping bag and... the Snugpak Under Blanket). I’m trying to estimate how much pack volume I’m going to save by going with down. I can figure out the weight savings, which is about half the weight...