The Big Agnes Zirkel SL 20 Degree Sleeping Bag is a superlight sleeping bag for fast moving backpackers that don't have time for extra weight. The silky, soft touch of Pertex rip-stop nylon is easy to slip inside and drift off to sleep in the middle of the wilderness. The fabric secures 800 fill DownTek insulation inside to keep you warm throughout the night, all while remaining water resistant for wet conditions. The two pound, fourteen ounce bag (regular) is ready for nights down to 20 degrees Fahrenheit. The sleeping bag gets it's name from Mount Zirkel, in northern Colorado. It's also super fun to say. Zirkel!
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