SKU: AW21428 Insulation Type: Down Weighs: 1585g Fill Power: 850 Fill Weight: 1585g (based on size Regular) Down Treatment: Standard Comfort Limit: -32°C Zip Length: 3/4 Length Zip Position: Left Zip Type: Mummy If you are looking to stay warm in colder temperatures on you winter adventures then the Western Mountaineering Puma MF is a top choice offering a very high level of warm an comfort.  Western Mountaineering says Kno… Puma MF Down Sleeping Bag