Expedition sleeping bags are the thickest padded sleeping bags available. They should protect you in the most extreme conditions, at very high altitud
...
Expedition sleeping bags are the thickest padded sleeping bags available. They should protect you in the most extreme conditions, at very high altitudes or very northern (or southern) latitudes. We refer to the comfort-limit value, the test value up to which an average man does not get cold. The comfort temperature for women (indicated as the comfort value) is higher. So ladies (and gentlemen who like to sleep a little warmer), pay more attention to the comfort value than to the comfort-limit.
Read more