Mountain Equipment Snowline SL -4
Here's what other sites are saying:
When your objective comes before all else, come to Mountain Equipment's Snowline SL -4 Down Sleeping Bag. It's designed for the alpinist who pushes the limits on the toughest routes and has been optimized for the athlete who packs as lightly as possible to put the emphasis on speed and success. Superlight and water-resistant fabric combines with 850-fill power down and trapezoidal baffles to bring you the lowest possible weight and reliable warmth when you're headed to the world's harshest locales.
- Mountain Gear