EN 13537 Sleeping Bag Temperature Ratings – Comfort, Safety, and Reliability

Understanding EN 13537 Sleeping Bag Temperature Ratings

When choosing a premium sleeping bag, one of the most important things to look at is the temperature rating. At MISS JULIA, all of our down sleeping bags are tested under the EN 13537 standard—a trusted European benchmark that gives outdoor enthusiasts accurate and reliable guidance.

✅ What is EN 13537?

EN 13537 is a standardized testing method developed in Europe to measure the thermal performance of sleeping bags. Instead of relying on estimates, it uses:

Thermal manikins (life-size heated models)

Controlled laboratory conditions

This ensures that the results are scientific, consistent, and comparable across brands.

By following EN 13537, MISS JULIA provides clear and trustworthy temperature ratings—so you can confidently choose the right sleeping bag for your adventures.

🌡️ The Four EN 13537 Ratings Explained

 

Every EN 13537-certified sleeping bag includes four temperature ratings designed to guide you:

Comfort Rating – The lowest temperature at which a woman (or average sleeper) can expect a good night’s sleep.

Limit Rating – The lowest temperature at which a man (or warm sleeper) can sleep through the night without feeling cold.

Extreme Rating – A survival-only rating for extreme conditions. Not meant for comfort, but shows the absolute minimum the bag can handle.

🔍 Why EN 13537 Matters for You

Confidence in your gear – Know exactly what conditions your sleeping bag is designed for.

Safety & comfort – Choose the right rating to avoid both chilly nights and overheating.

Fair comparison – Since all EN 13537-tested bags follow the same method, it’s easier to compare across brands.

💚 MISS JULIA’s Commitment

We believe you deserve outdoor gear that is not only high-performance but also scientifically tested and trustworthy.
That’s why every MISS JULIA down sleeping bag is tested under EN 13537 standards, giving you precise and reliable temperature guidelines for safe, restful nights in the great outdoors.

✨ Sleep Smart. Sleep Confident.

With MISS JULIA, you’re not just buying a sleeping bag—you’re choosing tested comfort and proven reliability.