Do not get this bag. It was a very big disappointment…
Fill: Thermolite Extreme polyester
Temperature Rating: +15 F
Weight: 3lb 6oz
Price Paid: $140
Do not get this bag. It was a very big disappointment as it did not even keep me warm at 40 degrees F. I would not recommend getting this bag if you are at all interested in keeping warm when backpacking. Fortunately I had a friend that bought the same bag and was able to confirm that it was not me that was the problem when staying warm since she had the exact same problem.
If you want a good bag that will keep you warm get a Sierra Designs Wyatt Earp or The North Face Snowshoe 3D. Both are $199 and 0 degree bags and will keep you plenty warm at +15. They're a little heavier and bulkier but are well worth the extra price, extra weight, and loss of room.