SKU: SS20731 Down Treatment: Hydrophobic Fill Power: 800 Fill Weight: 418g (based on size Regular) Insulation Type: Down Weighs: 1004g Comfort Limit: -2°C Zip Length: 3/4 Length Zip Position: Right Zip Type: Mummy The Nitro 800 is a lightweight, warm bag designed around the traditional mummy bag but with a few unique features that make Sierra Designs bags stand out. Great value for a bag with this much going on. Sierra Designs sa… Womens Nitro 800 20 Degree Down Sleeping Bag