The Expedition 1000 Sleeping Bag has a very impressive warmth to weight ratio as it's designed for use on expeditions to 8000m peaks, as well as use in polar environments. With 1000g of the highest quality 850FP European Goose Down, the Expedition 1000 is designed to offer warmth and protection in temperatures as low as -30°C.  Specifically designed for expedition use, it's slightly oversized to accommodate larger Expedition clothing, and uses a combination of high quality Pertex inner and outer fabrics. Key technical features include water-resistant linings at the head and foot to prevent water ingress, longitudinal baffles to minimise down migration, and a face baffle for improved use with a hood. Expedition 1000 Sleeping Bag