Gentlemen, I need some assistance. I am working on putting together a new belt kit based around the USGI Molle 2 waist pack and Mother canteen pouch. I know this subject has been beat to death but I am trying to find the most effective sleep system I can fit into the Molle waist pack. Nothing else really needs to fit in the pack except possibly an SOL escape bivy. I have looked at a number of modernized woobies as well as the Personal Survival Blanket from Wilderness Innovation but I don't have any hands on experience outside of the USGI woobie and the Wiggys woobie. What I need is more insight into pack size and a better idea on which ones are most efficient in terms of insulation vs compressed dimensions. Of course, if they don't fit in the molle waist pack then they are scratched from the list. I'm about 5'8" if that helps with dimensions. I know the first question is what temperatures are you expecting. I don't know and that's the point. I want to be able to go as low as possible within the specified pack size. I am also open to any other ideas on how to tackle the insulation issue in a small kit so feel free to chime in with other options.