**NOTE:** Product's color is 'Tibetan Orange Heat Map' This 40-degree synthetic insulated bag is sized to match a standard twin mattress and is the ultimate bag for base camp comfort. You can even zip two together and create a king-size bag. FEATURES: Comfortable 40-degree synthetic bag A bit larger than a standard twin mattress​,​ this is easily the largest single bag on the market Heatseeker Eco synthetic insulation composed of 30% post-consumer recycled material Internal cell-phone pocket with see-through​,​ touch-though mesh so you can hit snooze or ignore a call Included compression stuffsack features printed fabric and doubles as a simple backpack Short side zipper allows you to fold the bag more like your bedding at home To zip the bags together​,​ unzip both bags​,​ flip one bag over to align the main zippers and then zip the two bags together A member of the new Homestead Collection SPECS: Tempature Rating: 40 Degrees F Fill Weight: 1lb. 4oz. Stuffed Volume: 10″ X 18″ SBID: SBMV4ZA0