On a side note how would one go about comparing the insulation given by the 800 FP pillow down vs say the hammock gear down. I wouldn't mind comparing them in a quantitative manner if we could come up with an idea for an experiment that would show how much of a difference there was in insulation. Not just this one feels warmer but an actual thermal insulation measurement.
Here is what I was thinking. If you made a box that was missing one side and then put a thermometer inside and sealed the open side with a sample of the down sealed in a ripstop bag. Then if you put a constant heat source aimed at it you should be able to tell how much heat is allowed to pass through the material. The lower the number the better the insulation.
Please give me any ideas you guys have and if anyone wants to donate enough down to fill a 5 inch square test sample let me know.