The Sierra Designs Night Cap 20 Degree sleeping utilizes a "zipperless" design and lightweight, compressible synthetic insulation to save weight, minimize packed size, and still deliver reliable 3-season, all-condition backpacking performance.
The bag is insulated with recycled synthetic insulation that helps to give materials a second life and to ensure that warmth is delivered even in damp conditions. Unlike down fill, it continues to insulate even if it becomes wet. A 20D recycled nylon ripstop shell adds further protection against the elements and a 20D recycled nylon taffeta lining adds internal comfort.
By eliminating zippers, the bag saves weight, reduces noise, and gives you the ability to move around. An integrated front "comforter" grants access to the bag, seals efficiently to maximize warmth, and can be folded down for venting if temperatures rise. A "zipperless", self-sealing foot vent allows you to extend your feet out of the bottom of the bag in balmy weather but effectively retains heat when temperatures require it.
The Sierra Designs Night Cap 20 Degree sleeping bag is available in Regular (fits up to 6' 0") and Long (fits up to 6' 6") sizes. A stuff sack and storage sack are included.