This has been a great sleeping bag for camping in cold weather. It is tough to determine the performance because I have not used this bag in temps below 20 degrees (bag rated to -35 degrees). But down to 20 degrees, I was sleeping in just shorts and was nice and toasty all night. It has been through multiple trips out west with no issues. And when it comes to value, if you are out hunting elk and you can't sleep at night because you can't get warm, at that point you will probably pay just about anything for a warmer sleeping bag. This bag does not work well in temps above 70 degrees. You will be sweating.