I use an ENO with slap straps, fleece under, lightweight Lafuma, something untucked. always a light layer clothing and fleece top zipped up, wool cap, I also tie a line above and depending on the weather, I use a mosquito net tucked in around, and sometime a small tarp above. I have never slept below 50 degrees but up at the Meadows in Shenondoah, the wind is what nipped the most. In that cape. I used the tarp a bit tucked under for shielding from wind, fleece, them my bag.