A Guide for Understanding Sleeping Bag Temperature Ratings

Sleeping bag temperature ratings are essential to keep you warm and comfortable during your outdoor adventures. They can help you choose the right sleeping bag for the conditions you will encounter. However, understanding sleeping bag temperature ratings can be confusing. Here is a breakdown of each prompt in detail:

Comfort rating: This is the lowest temperature at which an average person can sleep comfortably in the bag. The comfort rating is based on the assumption that the sleeper is wearing appropriate sleepwear and using a sleeping pad. It is important to note that the comfort rating is subjective and varies from person to person. Some people might feel comfortable at lower temperatures than others.

Lower limit rating: This is the lowest temperature at which an average person can sleep for eight hours without feeling cold. The lower limit rating assumes that the sleeper is wearing appropriate sleepwear and using a sleeping pad. It is important to note that this rating is for survival purposes only, and the sleeper might not be comfortable at this temperature.

Extreme rating: This is the temperature at which an average person can survive for six hours without risk of death from hypothermia. The extreme rating assumes that the sleeper is wearing all available clothing and using a sleeping pad. It is important to note that this rating is not a measure of comfort and should only be used in emergencies.

EN (European Norm) rating: The EN rating system is a standardized testing method used to rate sleeping bags' temperature performance. The rating includes a comfort rating, a lower limit rating, and an extreme rating. The EN rating system ensures that the sleeping bags are tested and rated in a consistent and objective manner.

It is important to note that sleeping bag temperature ratings are only a guideline, and personal preferences, physical condition, and the specific camping conditions can affect the comfort level of the sleeping bag. When choosing a sleeping bag, it is important to consider the temperature rating, the type of insulation, the size and shape of the bag, and the weight and packability.