I have been using the Sierra Designs sleeping bag the past 3 weekends. My family and I have been camping in the mountains of western Wyoming at about 6500 feet.(batt in the gps were dead so this is aprox) The temps were as low as 36 degrees farenhiet and the Seirra Designs bag kept me warm and toasty. I would say it is a 10 out of 10 all the way around.

 

Umm, where is the picture of the bag and which bag is it?

 

What kind of insulation does it have? What kind of shell? What shape did they use? Did you sleep in a tent or under the stars? Did you have a pad? If so, what kind?

If you just want to introduce yourself, there are forums for that. This one is for gear. The focus should be on GEAR. More space in the initial post was consumed by a nice picture of you than information about the bag. Perplexing...

 

I have one of their light weight models and it is awesome. Breathes very well, is very light, very stretchy for those that don't like mumies and kept me warm all the way down to freezing (though my colder bag would have been a better choice since I didn't hike it in.