This bag uses a unique system to turn it into a two person bag. There is a nylon sheet that zips to the opened bag to create a double sleeping bag. One zipper joins the bottom and two seperate zippers, one on each side so each person can ventilate separately. The down can be shifted from bottom to top or back as a solo bag depending on how cold it is or from one sleeper to the other as a double bag. It is rated to 30F. This bag has been stored in a large storage sack for many years. It has not lost any loft has absolutely no odors or damage and looks new. It would make a great double sleeper for ultralight backpacking bikepacking cycle touring and a great solo bag to that turns into a quilt. Bag is just under 2 lbs. Open 52 inches across at chest. The item “Marmot Rectangular Mummy Quilt Down Sleeping Bag Regular 30F Backpacking Double” is in sale since Wednesday, May 5, 2021. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “k****g” and is located in Woodland Hills, California. This item can be shipped to United States.