This sleeping bag is designed for camping in the mountains and built for overnight and multi-day hiking and trekking trips. It casts the Bivy Warm™ system allowing you to slip out your arms and a synthetic insulation that copes well with wet conditions, providing warmth down to -5°C temperatures.New high-performance and ultra compacting synthetic fibre fillingUltra lightweight, durable and water-repellent Ripstop 30D Polyester shell Stretch lining for added comfortSide half-zip with anti-cold flapBivy Warm System to remove right arm from bag and be active, but stay warmPreshaped hood with tightener / Shoulder collar / Inside pocket Compression sack Millet Syntek -5° Reg - Sleeping bag Men's