Sleep like on down - thanks to comfort temperature through 360° filling and avoidance of cold bridges due to well thought-out chamber construction. With the Astro down sleeping bag, you're guaranteed a warm night's sleep. A trapezoidal baffle system keeps the down in place to prevent cold spots, ensuring you stay cozy and warm - even on cold nights. The Astro is also a bluesign(R) product, manufactured to strict environmental and social standards, with minimal impact on people or planet. And we only use down that carries the Responsible Down Standard (RDS). deuter - Astro 300 Down Sleeping Bag linden ink