This Versalite is the warmest in Western Mountaineering's ExtremeLite™series! A solid 3-seasons of backpacking, bike touring, or kayaking is at your fingertips with this bag. The VersaLite sports 20 oz. of high lofting 850+ goose down for 6″ of loft and a temperature rating of 10°. A “Super” Full Collar will seal in the warmth and protect you from the cold. 62″ of shoulder girth is roomy enough and the total weight is only 2 lbs for the 6 foot length.
The 6' size weighs 2 lbs.
The 6' 6" size weighs 2 lbs. 2 oz.
Western Mountaineering rates the bag at 10°F, which is based on extensive field testing. The EN13537 "Comfort Rating" (a.k.a. "women's" or "cold sleeper") is 21°F, and the "Limit Rating" (a.k.a. "men's" or "warm sleeper") is 9°F.