The outer material is made from 100% recycled materials, and the seamless construction ensures better thermal performance and waterproofing. The 360° insulation system ensures that the high-loft hollow fiber filling is evenly distributed throughout the sleeping bag - with half of the filling on top and the other half on the bottom. Practical details such as an anti-snag zipper protection, an inner pocket for valuables, and a contoured hood, combined with the durable functional material, make this sleeping bag a robust and long-lasting option for spring and autumn.