Bunker down and stay warm in conditions well below what you would expect for sleeping bags of this price. Made with a 100% recycled Hydronaute XT-R Shell and a 100% recycled silk-touch Nylon lining. With a technical shell fabric and high loft down but only the essential design features, the Warmlite XT-R Series provide warmth in cold to extreme cold at a very reasonable price. Available in Standard, Women’s & Extra-Large Sizes. The Warmlite XT-R Boxfoot 750 is appropriate for temperatures of -9ºC to -14ºC.