The US Military 3 Piece Modular Sleeping Bag Sleep System MSS with G Bivy in Woodland Camo is a high-quality and durable sleeping bag designed for outdoor activities such as camping and hiking. With a temperature rating of -40 °F and synthetic insulation, this mummy-shaped sleeping bag is suitable for cold weather conditions. Made with nylon and Goretex materials, it is water-resistant and provides protection from the elements. This genuine U.S. military issue sleeping bag is a reliable choice for athletes and outdoor enthusiasts looking for a versatile and comfortable sleep system.