Sierra Designs Women39;s Backcountry Bed 600 345;Season 15 Degree Sleeping Bag nylon Imported 600 Fill DriDown, Women's Design and Fit Versatile integrated comforter wraps allows you to easily adjust to varying temperatures Insulated Hand/Arm Pockets provide insulation under your arms when comforter is used outside of the bag Sleeping pad sleeve secures your sleeping pad to create the experience of a fully integrated bed Catenary shaped opening is smaller than bag width so when you push out, the walls push in to seal out drafts