SKU: SS21650 Down Treatment: Hydrophobic Fill Power: 650 Fill Weight: 1020g (based on size Regular) Insulation Type: Down Sleeping Bag Zip Type: No Zip Weighs: 2050g Comfort Limit: -6.6°C Zip Length: No Zip Type: Double The Backcountry Bed Duo has a firm focus on comfort. The oversized design uses an extra wide quilt-like front that allows you both to wrap up warm or vent heat quickly depending on conditions.   Sierra Designs says… Backcountry Bed Duo 20 Down Sleeping Bag