Features of the Sea to Summit Basecamp BC II Sleeping Bag ULTRA- DRY Down 750+ Loft 90/10 Down Cluster Premium RDS-certified Duck Down Spacious rectangular shape Two position sleeping mat attachment system Differential cut shell Zip draft tube with anti-snag Neck draft tube Cushioned internal hood draw-cord 2-way YKK #5 zip on each side of the bag and a third YKK #5 zip in the footbox for ventilation, removing the top of the bag for use as a quilt, or for joining two Basecamps together Includes lightweight Ultra-Sil compression bag, combined storage cell / laundry bag