Rating: 3 / 5
Big Agnes' lightest semi-rectangular 15 degree topbag. The construction is superb. 30D WRM shell, 775 down, and claimed weight of 2lbs. 4oz.
The bag meets the rating, is very roomy and compresses well. Has great features such as the pillow sack, and sleeve for the bottom insulation of your pad, full length zipper. Did loose some down but not more than other bags I've owned. Zipper track could use stiffer material to prevent snags.
The main gripe is that the claimed weight is way off. The bags actual weight is 2lbs. 10.5oz without the stuff sack (1oz). There are way lighter 15 degree bags, though not as roomy can be up to 14oz. lighter.
The setup is very comfortable which is what they promote.
3.5/5 is my real world rating.