The Nebelhorn down pants are suitable for use as your outermost layer when the weather is very cold, and they are a great choice as break and camp insulation for hikers. The materials are top notch, and Jack Wolfskin quality is always reliable. The relatively high waist protects your lower back. In addition to what you'd get with the same manufacturer's more affordable Atmosphere pants, the Nebelhorn delivers a top-notch surface fabric, water repellent down fill, higher grade synthetic insulation, and more refined down baffles. - The pants are easy to pack into their own pocket - Surface: high quality Pertex Quantum polyamide - Smooth polyester liner - Main insulation: fillpower 700 Hyperdry down with RDS certificate, treated to repel moisture, making for faster drying and less clumping - Additional insulation in easily compressed areas: 133g/m² Primaloft-kuitu - Elastic waist with adjustment