Our first choice for extreme cold and high altitude conditions where sleeping well can make or break an expedition.
Designed for high altitude mountaineering and arctic conditions, the contoured mummy design delivers efficient insulation, while our updated expedition sizing provides space for extra clothing to be worn inside the bag. The anatomically shaped and oversized footbox can comfortably accommodate boots when necessary.
Contoured mummy shape for efficient insulation
Expedition sizing for extra space and layered clothing
Anatomically shaped and oversized footbox can accommodate boots
Free-Flow half right-side zip for freedom of movement and additional ventilation
Large internal security pocket
Includes lightweight Ultra-Sil™ compression bag and storage cell
Weight: 2100 g
Comfort Temperature Rating: -29 Celsius
Lower Limit Temperature Rating: -40 Celsius
Extreme Temperature Rating: -68 Celsius
Max User Height: 198 cm
Packed Size: ø27 x 58cm CM
Down Ratio: 90/10
Fill Power: 850+
Comfort The temperature at which a standard woman can expect to sleep comfortably in a relaxed position. If you are female or consider yourself a cold sleeper, use this rating to decide the coldest temperature the sleeping bag is suitable for. We emphasise the Comfort temperature for our women’s specific sleeping bags.
Lower Limit The temperature at which a standard man can sleep for eight hours in a curled position without waking. If you consider yourself a warm sleeper, use this rating to decide the coldest temperature the sleeping bag is suitable for. We emphasise the Lower Limit temperature for all our unisex sleeping bags.
Extreme This is a survival only rating for a standard woman. Between the lower limit and the extreme rating a strong sensation of cold must be expected and there is a risk of health damage due to hypothermia. This is an extreme survival rating only; we do not recommend you rely on this rating for normal use.