I used this sleeping bag for a November whitetail hunt in Kansas. I slept in the bed of my truck under a topper on a twin mattress. One of the nights the low temp was about 23 degrees. I wore a pair of sweat pants and a long sleeve t shirt and was very comfortable. The spoon shaped bag offered plenty of room to turn from back to side to belly all without needing to readjust all the time. The bag doesn't pack down near ad small as some of the more expensive down bags, but for 1/4 the price it's definitely worth considering