>>614966Just get a fleece bag! It'll add like 10-15ºF to your sleebin bag rating. I use an L.L.Bean one with a 20º Browning bag and it's a great combo. the fleece is cumpfier'n a horse's cunt, and washes easily so it keeps my sleeping bag clean. just don't put it in the dryer! dryers fuck fleece up.
