Ah, the mountains! Their breathtaking panoramas, sometimes challenging trails, and… their unpredictable weather. As an experienced adventurer, I know that a good waterproof hiking jacket is not a luxury, but an absolute necessity. It can make the difference between a memorable adventure and a miserable, wet experience. But how do you navigate the multitude of models? Follow this guide, as I share my best tips for making the right choice.
WATERPROOFING, THE HOLY GRAILUnderstanding the numbers: Schmerber and RET
When talking about waterproof jackets, two technical indicators often come up: the water column (Schmerber) and Thermal Evaporative Resistance (RET). Don't be intimidated by these terms; they are simpler than they seem and essential for judging the effectiveness of your future companion on the trail.
Schmerber (or mm H2O) measures a fabric's resistance to water pressure. The higher the number, the more waterproof the fabric. For occasional hiking, 10,000 mm might be sufficient. But to face real downpours in the mountains, especially if you're carrying a heavy backpack, aim for at least 20,000 mm. This is the threshold where you can be sure to stay dry even in heavy rain.
RET, on the other hand, indicates the fabric's breathability. This is your jacket's ability to wick away the perspiration you produce. A low RET means better breathability. A number below 6 is excellent (ideal for intense efforts), between 6 and 12 is very good (perfect for most hikes), and above 20, the fabric is not very breathable. Imagine: an ultra-waterproof but non-breathable jacket is like walking in a plastic bag. You'll stay dry on the outside, but soaked on the inside by your own sweat!
MATERIALS AND TECHNOLOGIES
Gore-Tex, Pertex, eVent… how to choose?
The market for waterproof-breathable membranes is vast. Gore-Tex is undoubtedly the best known, but many other technologies offer similar, or even superior, performance, depending on the range. There are also membranes developed in-house by brands, often with excellent value for money.
These membranes work on the same principle: millions of micro-pores too small to let water droplets pass through (which are larger), but large enough to let water vapor molecules (your perspiration) escape. The magic happens!
"A good waterproof jacket is one you forget about. It protects you without hindering you, keeps you dry without suffocating you. It's the freedom to keep moving forward, no matter the whims of the sky."
Beyond the membrane, the jacket's construction is paramount. Seams must be taped (sealed) to prevent any infiltration. Also check for waterproof zippers (often YKK Aquaguard zippers) and a storm flap to protect the main zipper.
THE DETAILS THAT MAKE THE DIFFERENCE
Essential features for an adventurer's jacket
A good waterproof hiking jacket is not just about its membrane. Many details, designed by outdoor experts, significantly improve the user experience. Here's what I always look for:
- The hood: It must be 3-point adjustable (depth, head circumference, facial tightening) and large enough to fit over a helmet if you're mountaineering. A stiff brim is a plus for protecting the face from rain.
- Ventilation zips (pit-zips): Located under the arms, they allow heat and moisture to be quickly evacuated during intense efforts, without having to remove the jacket. Essential!
- Pockets: They should be numerous enough, accessible even with a backpack (often positioned a little higher), and obviously waterproof.
- Adjustments: Wrist tightening (Velcro), drawcord at the hem and waist to adjust the jacket and prevent wind or rain from getting in.
- Weight and volume: For hiking, every gram counts. Opt for a light and compressible jacket that can be easily stored at the bottom of your pack.
- Durability: A durable outer fabric resistant to abrasion is crucial, especially if you hike in the forest or with a heavy backpack. Denier (D) indicates the fabric's resistance. The higher it is, the more robust the fabric.
At BaroudeurCamp, we have selected equipment that meets these requirements. The K-Way Waterproof Jacket, for example, is an excellent choice for hikers looking for a perfect balance between lightness, protection, and breathability. Its sleek design and well-thought-out features make it a strong ally for your outdoor adventures.
MAINTENANCE AND LIFESPAN
Taking care of your second skin
A waterproof jacket is an investment. For it to accompany you for a long time, regular maintenance is essential. Don't be afraid to wash it! Dirt and perspiration clog the membrane's pores, reducing its effectiveness. Use specific technical detergents (like Nikwax or Grangers) that preserve the waterproof-breathable properties.
After several washes or intensive use, the durable water repellent (DWR) treatment on the fabric surface may fade. This is what makes water bead up on the jacket. If water no longer beads up and the fabric "saturates" with water, it's a sign that you need to reactivate the DWR with a spray or a product to add to the wash. This won't make the jacket more waterproof (the inner membrane takes care of that), but it will greatly improve its breathability and comfort.
By following these few tips, your waterproof hiking jacket will remain your best ally for facing the elements, season after season. It's one of the pillars of the 3-layer rule, which we already discussed in our article on the art of dressing for mountain hiking.
K-Way Waterproof Jacket
Designed for adventure, this jacket combines performance and lightness. Stay dry and comfortable, whatever the weather.
View product →Adventure doesn't wait for the rain to stop
Choosing the right waterproof hiking jacket ensures that the weather will never be a hindrance to your explorations. Take the time to properly assess your needs, understand the technical specifications, and prioritize quality. A well-chosen jacket is an investment that will faithfully accompany you for hundreds of kilometers. Remember that your comfort and safety depend on it. Ready to face the elements? The K-Way Waterproof Jacket awaits you for new adventures!