Sleeping Bags for Extreme Cold Weather

Temperature ratings are very important in determining which sleeping bag is right for you.  There are typically four bag ratings: warm weather (efficient for temperatures down to around +32F/+0C), three-season (efficient for temperatures down to around +15F/-9C), cold weather (efficient for temperatures down to around -5F/-21C), and extreme cold weather (efficient for temperatures colder than -5F/-21C).  This page carries extreme cold weather sleeping bags.  As you browse through the various sleeping bags, please consider the environments in which the bag will be used.