Klymit KSB 0 Degree Synthetic Realtree Xtra Sleeping Bag SLEEP COMFORTABLY EVEN DURING BITTER COLD NIGHTS: Large draft tubes and over stuffed with the best synthetic insulation provides a warm night at sub freezing temperatures INCREDIBLY COMFORTABLE: Luxurious, Warm and Soft 20D nylon fabric feels like a cloud against the skin; A great complement to any of the Inertia or Static camping pads TOP FEATURES: Stretch Baffles that stretch when you move give the snugness of a mummy bag without the restriction; MUMMY HOOD with an adjustable neck collar to minimize heat loss for cold sleepers and cold nights TEMPERATURE RATING: 0 Degrees Fahrenheit (Comfort), -10 Degrees F (Extreme); because we are authorized sellers of this product, it includes a limited LIFETIME WARRANTY BUILT FOR THE COLD: Filled with Klymalite Synthetic Insulation; features a mummy hood, and an adjustable neck collar to minimize heat loss for cold sleepers and cold nights