SKU: SS22544V Weighs: 1492g Fill Power: 650 Fill Weight: 900g (based on size Regular) Down Treatment: Hydrophobic Comfort Limit: -18°C Insulation Type: Down Zip Length: 3/4 Length Zip Position: Left Zip Type: Mummy Rab's Ascent range uses 650 Fill Power down contained in technical baffles to create sleeping bags with very respectable warmth to weight ratios despite them being a more comfortable shape than the more performance orien… Ascent 900 Down Sleeping Bag