I currently use a Thermarest Prolite full length pad that weighs 16.8 ounces and I am thinking of moving to a Thermarest Prolite Small for three season use. I am 6'1" so the XS is likely too small for me. I like the fact that the Prolite is only an inch tall so the dropoff would not be that noticeable. The question I have is whether it would be necessary to put something under my feet from an insulation perspective. I currently place my empty pack as well as an exped UL pillow below my head while sleeping. So using my empty pack under my feet might require some changes to my sleep routine. I'm curious what others have used beneath their feet, if anything. I can save about 5 ounces by moving to the torso length prolite and the small is frequently on sale for about $50 which seems like a decent cost/ounce savings to consider. I don't have a big budget for gear changes for next year so only interested in getting a big bang for the buck for any gear changes.