I just bought my first hammock this summer. It is a HH Ultralight Backpacker. So far I love it. Before I bought the hammock, I had bought a Big Agnes Lost Ranger sleeping bag and pad. The sleeping bag has no insulation in the bottom, instead it has a sleeve for the pad. The pad itself has primaloft insulation in it. I was concerned after getting the hammock that the BA sleeping bag/pad would not work with the hammock. On the contrary, it works great! I am a very happy hanger!