What is a yurt, you ask? In the simplest terms, a yurt is a circular wooden framed tent with a conical roof whose origins stem from nomads in Central Asia. And what does that have to do with a sleeping bag? Just like a yurt, this sleeping bag is a warm, comfy oasis from the elements. Made of polyester filled taffeta, this Marmot bag has a classic blanket style, which provides consistent insulation. This bag zips open to a Queen-size comforter and zips together with other Yurt bags. Ideal for overnight temperatures that dip down around 40 degrees, the Marmot Yurt should be considered a three-season bag. Ideal uses include: car camping, a family outing and, of course, sleeping in a yurt!