Dress & Sleep Guides
Sleep systems decoded: EN/ISO temperature ratings, R-values, and how to actually stay warm at night.
- How to Read EN/ISO Sleeping Bag Temperature Ratings What the comfort, lower-limit and extreme numbers mean, how the thermal manikin test works, and where real life differs.
- Sleeping Warm at Night: A System Checklist Beyond the bag: pad R-value, damp insulation, dinner calories, the Hat Question and the small habits that decide cold nights.