Originally Posted by
Klanecfsb
so it got down to 46 last night in my back yard. started out on the warm side,and woke up around 6 pretty toasty except for my butt/lower back. Put my car window reflector in there and it killed the cold spot; still more comfy than a thermarest and feel like it would stay in place better, but i was already awake so i made coffee.
my question is if i decided to make this a sew up, and add some insulation to get a few more degrees ( well the max with out adding bulk) what kind is preferred and why?