2018 Nemo Sonic -20 Degree Sleeping Bag Size Long. 850fp down (I believe they changed to 800fp in 2019). Lightly used sleeping bag. Picked this up a little over a year ago. Used it on maybe 2-3 winter overnights in sleeping clothes. Has been stored in the included storage bag anytime it was not on trail. Have not used it but there is a compression sack included as well. Smoke and pet free home, hasnt even seen campfire smoke. The sleeping bag also features “thermo gills” that allow you to unzip two zippers on the top of the sleeping bag that expands the baffles to allow you to vent out some heat if too hot. You can see the small zippers in the picture of the top of the sleeping bag. This is the long version of the sleeping bag and should be able to fit users up to about 66. Weighed sleeping bag only with luggage scale and it came out to 1560g, or 55oz (3.44lbs). I cannot really guarantee that this is accurate but have no other way of weighing it. Seems pretty close to Nemos stated weight. The item “NEMO Equipment Inc Sonic -20 Sleeping Bag -20 Degree Down Size LONG 6’6″ is in sale since Sunday, January 5, 2020. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “eastonquincy6″ and is located in Quincy, Massachusetts. This item can be shipped to United States.