Kelty Cosmic 20 Sleeping Bag

I have the previous version ... It's held up well. I sleep warm and its a good 3 season bag for me. I have a 10L sea to summit ultrasil and gets pretty small for backpacking.

I have had a Kelty Cosmic 20 for maybe two or three years. I am not sure if it is dridown or not but I dont think so. My bag has been great for the price. I paid about 100$ and camp saver seems to have it on permanent sale. I have taken it down to about 15f and it was cool but sleep able. I have washed it several times and it still going strong. Are there better bags out there? Sure but not at this price.

I used a cosmic 20 for the cold part of an AT thru-hike and for about 6 years after that in the fall/winter (2010 version). It held up really well with only occasional washings, was very roomy and comfortable for my broad-shouldered and overweight self, and always kept me warm. My coldest night in the bag was 11 degrees F (was plenty warm once the bag got warmed up), I've spent many 20-30 degree nights in it, and found it comfortable up to about 40-45 degrees F before it became too hot. This was on a thermarest zlite sleeping pad. It's relatively cheap, its a great bag functionally, but it is a little on the heavy side by ultralight standards, my long was 2 3/4 pounds. I thought it was an awesome bag for the price.

I don't have much experience with the other bags, but I have a Cosmic Down 20 degree and I love it. I never had the need/desire to upgrade it until I went crazy and bought a Katabatic Flex quilt. I really believe that the Cosmic Down 20 is one of the best buys out there, for price, comfort, and performance. I've brought it down to probably 23-25 degrees in a hammock with an inflatable pad under me, with my normal cold weather sleeping clothes (hat, thermal top/bottom, socks) and was legitimately toasty warm all night.

I slept in this bag in 30 degree weather on Saturday night. Other than my feet (which were hanging off the end of my sleeping pad) I was nice and warm. It is fairly bulky and heavy as other posters have mentioned, but I was able to pick it up for $100 when I was first getting into backpacking and wasn't sure if I wanted to drop 3x that on a lighter bag.

I have a Kelty Cosmic 20, and with a light S2S liner and my thermals+beanie, I've been down to ~25 degrees on the mountains comfortably. I haven't used the others so I can't compare, but I don't have any complaints with Cosmic.

I have one! Once I took it to right around freezing, and with my puffy on and the sleeping bag, was just able to sleep. It was pretty cold. It is a great sleeping bag, and I recommend it. If I knew it would be freezing I'd take a couple extra layers. Otherwise, in Louisiana, it will be plenty of warmth (even too much) a majority of the time. It depends if you sleep hot or cold, too.