I’ve got two Kelty Mistral 20 sleeping bags for sale. They are used, but in good condition with the original stuff sacks. They are a good 3-season bag and work well. I’ve used them backpacking in the Sierras as well as camping in Anza Borrego.
These bags have a solid red top (unlike the 2-color design in the photo).
These list for $75 on the Kelty web site. You’ll find the specs and all the details here on the Kelty web site.