Originally Posted by Take-a-knee
Thanks for posting that Billybob. I would be interested in hearing how much a 20in wide pad would boost the warmth, I'm guessing it would. Those wider pads are a real pain to pack. My 28in wide coffin shaped evazote pads have a serious crease from folding them in half lengthwise. Maybe something like a Prolite 3 or 4 thermarest in the sleeve would be all you need to take that system well below zero.
I have slipped a 20" pad in there ( a Thermarest torso size 1" thick UL, and a 20" wide Ridgerest on another day) just playing around one day. But it was not particularly cold, so as my back was plenty warm with just the quilt, I couldn't really tell if it was much warmer. But it was plenty comfortable. I did have to make sure it was either far enough towards my head or feet so that the bottom edge did not fall below my knees ( I think it was my knees- ) because the edge caused discomfort for some reason. I think as long as the edge did not hit that one spot, comfort was just fine. And full length wold have been just fine also. I am assuming that warmth is more or less additive, but I won't ever be able to test it unless we get some record temps, and then some. Shug and KWAPKE need to be testing this thing!