Kammock into everyone's mind. Now they have been awarded Gear Of The Year. One sleeping bag, endless options. The Kammok Thylacine Down Sleeping Bag™ is an innovative outdoor sleep system that adapts as your needs and environment change. Set apart from other sleeping bags, the Thylacine is tailored directly to your body with adjustments to control the width of your sleeping bag, minimizing cold spots and maximizing comfort. When equipped with a liner, the Thylacine base bag adapts to a range of temperatures and outdoor conditions without sacrificing premium performance or snuggly soft feel. On its own, the Thylacine Down is a 20°F rated sleep system. Combined with the Thylacine Liner, you can sleep comfortably at or above 0°F. This sleeping bag is built to last and is covered under our lifetime warranty.