【2026年版】登山レインウェア選び方「濡れない」で選ぶのは間違い｜低体温症を防ぐ3つの基準＆おすすめ5選

"Isn't rainwear just about keeping you dry?" That way of choosing is almost always wrong. What's truly dangerous in the mountains isn't getting wet, but getting cold. A drop of just 2-3 degrees Celsius in body temperature can impair judgment, and further drops can cause your limbs to become immobile—this is hypothermia. It happens all the time, even in the summer mountains. Rainwear isn't just "rain gear," it's "a tool for managing body temperature." Just having this perspective will fundamentally change how you choose rainwear. As a staff member at a mountaineering equipment store, I'll thoroughly explain how to choose rainwear from a real-world perspective, including my own mistakes. 📌 What you'll learn in this video ✅ Why hypothermia can occur even in summer mountains ✅ Three criteria for choosing rainwear (wetness tolerance, sweating, and risk of stagnation) ✅ Why "Gore-Tex is safe" is a mistake ✅ How to choose rainwear if you sweat a lot ✅ A frank comparison of 5 recommended rainwear for 2025 ⏱ Timestamps 00:00 Opening 01:10 My mistake (wearing running rainwear in the Northern Alps) 03:45 The dangers of hypothermia 05:24 Three criteria for choosing rainwear 11:04 Thorough review of 5 recommended rainwear models 17:56 Summary of the 5 model comparison chart 18:20 Ending Items introduced in this video: 1. Montbell Tempest Jacket 2. The North Face Climb Light Jacket 3. Millet Typhon Stretch Jacket 4. Finetrack Everbreath Photon Jacket 5. Mammut Masao Light Jacket 💬 Tell us your favorite rainwear! Comments such as "I use this" or "I'm concerned about this" are very welcome. 🔔 Please support us by subscribing and liking! We provide knowledge about equipment and gear to help beginner hikers avoid mistakes. #hikingrainwear #howtochooserainwear #hikingraingear #hypothermiaprevention #hikinggear2025 #GoreTex #Montbell #TheNorthFace #Millet #Finetrack #Mammut #beginnerhiker #summerhiking #breathablewaterproof #sweatchillprevention #GoreTexRainwear