The Helium 250 is a men's sleeping bag designed by Mountain Equipment, ideal for your summer getaways in warm weather. Although this sleeping bag is extremely lightweight, it remains sufficiently warm for your summer bivouacs. Indeed, the Helium 250 is filled with duck down, offering excellent insulation. Additionally, the Helium fabric is dense, providing a high level of wind resistance, and thus minimal heat loss. Furthermore, the slanted box wall baffles not only reduce the weight of the Helium 250 but also ensure the down is well distributed in the sleeping bag for effective insulation. Finally, the Lode Lock™ closure prevents the Helium 250 from opening, keeping you warm while you sleep. Materials: 100% polyamide The Helium™ 20D outer shell is very lightweight and highly breathable Pure duck down 90-10 Alpine fit maximizes thermal efficiency Mid-level side seams Anatomically shaped hood with 5 baffles Anatomically and offset 4-compartment foot box Full-length Gemini™ zipper and integrated collar with Lode Lock™ closure Comes with a waterproof storage sack and a storage cube Comfort temperature: 7°C Limit temperature: 2°C Extreme temperature: -12°C Fill power: 700 cuin Weight: 660 g Mountain Equipment Helium 250 - Sleeping bag - Men's