Our Astro Pro professional down sleeping bag is perfect for mountaineers, both in the tent and under the stars. The inner lining, which can stretch 25% in width, fits perfectly around the sleeper. It offers plenty of space and at the same time keeps the sleeping bag warm. The sensitive foot area is optimally insulated by the three-dimensional foot box and the ergonomic cut guarantees pleasant foot freedom. All models of the Astro Pro series are a bluesign product and are also made of certified down (RDS).