Best Warmth to Weight Ratio out there
2lbs and it keeps me warm at 15 degrees. It performs just as well as everyone claims. I love this bag, has a nice snug fit, great draw string and packs down to the size of a nalgene practically. The down takes a bit to get fully fluffed, longer then others I have seen and I wish I had the EQ version for more waterproofing. But I would recommend this bag highly.