The Helium 800 is a sleeping bag designed by Mountain Equipment to provide optimal insulation during cold winter nights. Although this sleeping bag is lightweight, it remains warm and insulating. Indeed, the Helium 800 is filled with duck down with a fill power of 700 cuin, offering excellent insulation. Additionally, the outer fabric Helium™ 20 is dense, providing the Helium 800 with high resistance to wind and heat loss. Furthermore, the use of slanted baffles not only reduces the weight of the sleeping bag but also better distributes the down in the Helium 800 for maximum insulation. Finally, the Bulls Eye™ technology, located at the footbox, aims to limit the down shift towards the bottom, always with a focus on lightness and compressibility. Enjoy a comfortably warm night while bivouacking with the Helium 800 from Mountain Equipment! Materials: 100% polyamide Outer materials: Helium™ 20 Filling: Down Codex approved duck down Filling composition: 90 / 10 Fill power (cuin): 700 Comfort temperature: -8°C Limit temperature: -15°C Extreme temperature: -36°C Alpine fit maximizing thermal efficiency Slanted baffles all around Mid-level side seams Anatomically shaped hood with 5 baffles 4 offset anatomical baffles Full-length Gemini™ zip baffle and integrated collar with Lode Lock™ closure Comes with a waterproof stuff sack and storage cube Weight: 1,230 g Mountain Equipment Helium 800 - Sleeping bag - Men's