I have been able to test the Kelty Cosmic 20 in some warmer temperatures recently, both in a hammock and in a tent. It’s going to be hard to find a bag out there that gives you this much bang for your buck. Click here to see some updates from my last two trips and read my final thoughts on the sleeping bag.
I was able to take the Kelty Cosmic 20 on a multi night backpacking trip on the Black Mountain Crest Trail. Varying temps on each nigh allowed me to test out the temperature ratings above and below the Cosmic 20’s range.