How low in temp can you go with just foam pad as an insulator? And what pad(s) do you use at various temperatures?
I'm trying to keep my setup as light as possible. Lowest temps I hang in are 20-30. Most of the time around 45 deg at night. I'm looking at getting a blackbird but to do that an underquilt is out of the question and I'll probably just use 40deg bag as a top quilt.