ISO 23527: Limit and Comfort Ratings Explained

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📌 ISO 23527: Limit and Comfort Ratings Explained — What They REALLY Mean for Your Sleeping Bag

Hey there guys and gals, this is Chris with Ignited by Nature and welcome back to my channel! In this video, we’re diving deep into ISO 23527—the standard used to rate the comfort and limit temperatures of sleeping bags. Whether you’re a seasoned backpacker, a hunter braving sub-zero temps, or just trying to pick the right bag for your next adventure, understanding these ratings is essential.

I’ll walk you through the difference between the comfort rating and limit rating, why they matter, and how you should actually use them when choosing a sleeping bag. Plus, we’ll touch on how these ratings are tested and the role of personal factors like metabolism, layering, and sleep style.

📚 Whether you’re eyeing a 0-degree mummy bag or a minimalist quilt, this video will help you make smarter gear decisions and stay safe (and warm!) in the backcountry.

🔥 Don’t guess when it comes to your sleep system—understand the numbers and sleep better outdoors.

🎯 Chapters
00:00 - Intro
00:46 - What is ISO 23527?
01:34 - Comfort vs. Limit Rating
03:05 - How ISO Ratings Are Tested
04:22 - Factors That Affect Perceived Warmth
05:36 - Common Misunderstandings
06:48 - Final Thoughts & Real-World Tips

🔗 Related Videos & Gear
👉 How to Layer for Backcountry Hunting
👉 0 vs 15 vs 32 Degree Bags - Stone Glacier Chilkoot Series
👉 My Favorite Sleeping Pads & Insulation Tips

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