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EN 13537

What is an EN 13537?

EN 13537 is the European standard for testing and rating sleeping bags, providing standardized temperature ratings that help campers and backpackers choose appropriate sleep systems. The standard defines four temperature ratings: Comfort (for women), Lower Limit (for men), Extreme (survival threshold), and Upper Limit (maximum comfortable temperature). These ratings are based on laboratory testing with thermal manikins and provide reliable, comparable temperature guidelines across different sleeping bag brands and models.

Related Terms

Temperature Rating

A temperature rating is a standardized measurement that indicates the lowest temperature at which a sleeping bag or outdoor gear item will keep a user warm and comfortable. For sleeping bags, it typically includes comfort rating (temperature at which an average woman sleeps comfortably), limit rating (temperature at which an average man sleeps comfortably), and extreme rating (survival temperature with risk of hypothermia). This rating system helps campers and backpackers select appropriate gear for expected weather conditions and ensures safety during overnight outdoor adventures.