On another note... I also have a Neo air xtherm that I have tried before, but did not like it in the hammock. It may be useful in extreme cold (for me, may be different for others) but I woke up in a deep sweat with that thing... I swear its radioactive (slight exaggeration). I much prefer the original Neo air. I use it to make the bmbh a great experience. Since it has little insulation I consider it a luxury that I definitely love to afford.