User Review: Moonstone 650 Great Divide
Fill: 650+ down
Temperature Rating: 5 farenheight
Weight: about 3 lbs.
I've had a Moonstone Great Divide bag for about 10 years. I love the bag. It's still in great condition. I use it for all my cool and cold weather camping/backpacking and find it very comfortable from the mid-60's F (with bag unzipped) into the 20's F.
I tend to be a chilly sleeper (even at home), so I wouldn't use it colder than the mid-20's F, unless I used a bag liner/cover or wore long underwear while sleeping. If I was a warm sleeper, I suspect I could use the bag into colder temperatures.