Nope, won't keep me warm
Reviewed by Colorado Hiker from Western Slope of Colorado on Sunday, March 25, 2018
I ordered this for May camping and I'm sure it won't be warm enough. I tried it on my deck at 43 degrees for 30 min. with a sleeping pad. I was wearing jeans, wool socks and a polartec top. While I didn't get cold during that time, I could tell it just wouldn't work for an entire nights sleep. Returning it and have already order a Mountain Hardware 10 degree down bag.