http://www.westernmountaineering.com/index.cfm?section=Products&page=Sleeping%20Bags&cat=Microfiber%20Series&ContentId=21 http://www.westernmountaineering.com/gallery/small/westerntmn-21_SM.jpg semi-rectangular, works great as a quilt, true to its temp rating AND also weighs 2 lbs. I sp...