Originally Posted by buddha
Toward the end of the summer season I made a sleeve for my 72" Thermarest out of an old camo fleece blanket. After the initial sewing the sleeve was about 8" wider than the pad and I sewed off a 4" channel on each side. I then cut two 4" strips out of a 72" closed cell foam pad and slipped one into each channel. With that in my hammock the closed cell pieces wrap up alongside my shoulders when I lay down. I slept out in this in October (nighttime temp was probably down around 40) with a summer weight bag. About halfway through the night I started breaking a sweat. I think it was a combination of the closed cell inserts and the fleece. The fleece actually felt like it was generating heat with the compression of my body weight on it.
It was actually the ccf insulating you too well. 40* is way to warm to be using ccf. save it for some real cold.