Details Mountain Equipment Helium 600 Sleeping Bag The Helium 600 sleeping bag will keep you cosy in the light frosts of early spring and the last of the cool autumn weather; even at higher altitudes or Northern latitudes. With a light and highly breathable outer shell, the bag is constructed from slanted box-wall baffles, stuffed with 700 fill power duck down, in an Alpine fit which maximises thermal efficiency. Weight: 1070g> Fill weight: 582g 90-10 pure duck down with a minimum fill power of 700 Good night's sleep guaranteed at -10°C/30°F Comfort: -1°C/30°F | Comfort limit: -8°C/18°F | Extreme: -26°C/-15°F Packed size: 26cm x 23cm x 20cm Helium 20™ outer shell is very light and highly breathable Slanted box-wall baffles throughout Mid level side seams 5 baffle anatomically shaped hood 4 baffle anatomically shaped and offset foot-box Full length Gemini™ zip baffle and integrated collar with Lode Lock™ closure Supplied with a waterproof roll-top stuff-sack and storage cube Mountain Equipment is a member of the Fair Wear Foundation Specifications Helium 600 Men's Sleeping Bag