This sleeping bag is designed for camping in the mountains and built for overnight and multi-day hiking and trekking trips. It casts a synthetic insulation that copes well with wet conditions, provides warmth down to 0°C temperatures and is easy to care for.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 0° Reg - Sleeping bag Men's