Throughout the what seems like endless research put into building the perfect to me backpacking setup, I have repeatedly came back to Sierra Madre Research for my sleep system insulation needs. I absolutely love and swear by the Puffle as my any time, any situation go to form of insulation, and the Pufflo Pillow is a great addition, especially when being used in a hammock due to the convenience of a inflatable pillow for adjustability with the outstanding comfort of the pufflo cover. 10/10 would and do recommend!