Quality sleep is one of the basic requirements for full regeneration during any outdoor activity. The Mountain Equipment HELIUM 400 WOMEN'S down sleeping bag weighs an incredible 750 g, and at the same time you can sleep comfortably in it at -3 °C. It is filled with high quality duck feathers. You get a 10-year warranty on the sleeping bag. 100% recycled surface material HELIUMTM 20 D is light, highly breathable and wind resistant and treated with PFC free water resistant DWR treatment. 368 g of duck down 90/10 with a minimum fill of 700 cuin. Womens Alpine Fit cut, with zonal stretch seams on the inside - for maximum thermal efficiency at minimum weight. Slanted chambers – for maximum thermal efficiency at minimum weight. Optimized feather distribution and precise volume for each chamber separately. Anatomically shaped hood with 5 chambers. Anatomically shaped and beveled foot area from 4 chambers. Full-length side zip placket and integrated neck collar with simple Lode Lock™ magnetic closure. Comes complete with waterproof case and storage net.