The Chilkoot series of sleeping bags are designed for backpack hunters going deep into the mountains for days on end. With a focus on warmth to weight ratio and pack-ability, the Chilkoot 15° bag utilizes industry-leading materials to achieve an overall weight and temperature rating that is best-in-class. A Pertex Quantum shell adds water and wind resistance to protect the 850 Fill power goose down HyperDRY insulation. The bags are designed with an articulated footbox and differential cut to provide warmth and maintain loft around the body regardless of sleeping position. An articulated hood boasts a uniquely designed insulated neck cuff with an elastic and magnetic closure to seal in heat. A weight conscious 2/3 length reverse coil YKK zipper is paralleled by Dacron tape to reduce zipper snagging. When all put together, the Chilkoot 15° is a high-performance ultralight sleeping bag designed specifically for the most discerning mountain hunter.