I recently got myself my first hammock, a hennessey ultralight backpacker asym. It has to be the most comfortable sleep I've ever had in the outdoors! The only problem is the cooling effect of the air beneath me. I've looked into getting a underquilt but can't bring myself to spend the cash for one. I was contemplating making one but again it's a lot of work and my sewing skills suck. I have found a possible alternative and would like to see if anyone has any experience with it. Seems too good to be true if you ask me.