Slumberjack Survivalist +20°F

I thought I had gotten a great deal on this bag when I bought it. The first time I went backpacking with it, it was warm, but the temp never got below 40F. Next time, got rained on, temp around 35F, was a little chilly in the bag. Third time out, temp got down to about 30F, and I was cold even with long johns and socks on. I keep this bag stored correctly (lofted), so its inability to deal with these not-so-low temps is not due to a packing of the material. This bag is not rated right, period. I'd rate it a good 40F bag, but not lower than that. Do NOT buy it thinking it will be warm down to 20F.