I used this bag on a winter mountaineering trip in…
Fill: 800 fill down
Temperature Rating: -40 degrees Farenheight
Weight: 4 lb 11 oz.
Price Paid: $437
I used this bag on a winter mountaineering trip in February 2006. The weather was -10 degrees Farenheight, 60 MPH wind gusts, and blowing snow. I was warm sleeping in the snow in a tent. The bag is long and wide enough so that your boot liners can be placed in the bottom to dry out. This bag is well worth the price and should be used for winter camping and mountaineering.