It only takes a few minutes. The sun is above the ridge, the conditions are perfect for a trip, and suddenly a cold wind arrives, the first raindrops fall and within moments it turns into a downpour. This is exactly the reality of the mountains, forests and outdoor trips from spring to autumn. And it is in these moments that you notice the difference between “just any jacket” and truly functional waterproof clothing.
Well-chosen gear does not only protect you from discomfort. Wet clothing quickly draws heat away from the body and significantly increases the risk of getting cold. In this article, you will find a complete overview of what to wear so that rain does not catch you unprepared – from waterproof jackets, trousers and children’s outdoor gear to proper care, which determines whether the membrane will continue to work even after several seasons.
What is waterproof clothing and how is it different from water-repellent clothing?
One of the most common mistakes when choosing outdoor clothing is confusing the terms “water-repellent” and “waterproof”. The difference is important.
Water-repellent clothing, typically softshell or a lightweight windbreaker with a DWR finish, can handle drizzle, a short shower or damp wind. Water droplets run off the material, but after some time the fabric starts to absorb moisture. It is an ideal solution for everyday wear or fast movement in changeable weather, but it is not enough for all-day rain.
Waterproof clothing works differently. Hardshell jackets and trousers use a membrane that prevents water from getting in while allowing water vapour to escape. Thanks to this, you stay dry not only from the outside, but also from the inside.
That is why a water-repellent jacket is not enough for a mountain trip. If you are caught in several hours of rain in the mountains, softshell or a lightweight windbreaker will gradually soak through and lose its ability to insulate.
Water column and breathability
The basic parameter of waterproof protection is the water column rating.
- Up to 10,000 mm – light protection for the city or short showers.
- 15,000–20,000 mm – ideal for hiking and regular outdoor activities.
- 20,000+ mm – reliable protection even in long-lasting rain or when carrying a heavy backpack.
Breathability, given in g/m²/24 h, is just as important. If a jacket does not “breathe”, you will get wet from sweat regardless of how high-quality the membrane is.
Kilpi uses its own Siberium membrane system, which combines high water resistance and breathability so that it works in real outdoor conditions – from quick showers to several-hour ascents in the mountains.
A waterproof jacket as the foundation of every trip
If there is one piece of outdoor gear that is not worth saving money on, it is a waterproof jacket. It protects the torso, which is the part of the body that loses heat the fastest and has the biggest impact on overall comfort.
A quality hardshell jacket should have:
- sufficient water column rating and breathability,
- taped or welded seams, because without them water can get inside,
- an adjustable hood with a peak,
- ventilation zips under the arms,
- pockets positioned above the backpack hip belt,
- low weight and good packability.
For one-day mountain trips, technical jackets with high breathability and ventilation are a good choice. For family trips, you will appreciate a more comfortable fit and easy hood adjustment. If you are looking for a versatile model for both the city and nature, a more casual cut with a less technical look makes sense.
For a complete overview, we recommend the category of Kilpi hardshell and waterproof jackets.
Men’s vs. women’s waterproof jackets
Women’s cuts are not just a design version of men’s models. They take into account a different body shape, such as a narrower waist, different sleeve length and wider hip area. The right fit has a major impact on both comfort and membrane functionality.
Women’s models can be found in the category of Kilpi women’s hardshell jackets, while men’s models are available in the section of Kilpi men’s jackets.
Kilpi women’s hardshell jackets
Kilpi women’s hardshell jackets combine technical performance with a women’s fit and lower weight. They are suitable for mountain hiking as well as everyday wear in changeable weather. The advantage is a wide choice of cuts, from minimalist ultralight models to more robust jackets for more demanding conditions.
Waterproof trousers – the underestimated half of your outdoor wardrobe
Many people deal with rain by choosing a jacket, but forget about trousers. Wet legs, however, mean rapid cooling of the body, discomfort and, in the mountains, even a risk of hypothermia.
Hardshell trousers provide full protection against rain and wind. They are ideal for mountain hiking, multi-day trips or heavy rain.
When choosing them, pay attention to ankle or side zips, the option to put them on over shoes, waist adjustment, ventilation and reinforced areas around the knees and seat.
You can find the complete range in the category of Kilpi hardshell and waterproof trousers, or separately for men and women.
Softshell trousers as an alternative
Softshell trousers make sense in damp weather, during higher-intensity activity or in situations where you need better breathability. However, they are not a replacement for hardshell trousers in long-lasting rain.
They work well for autumn hiking, fast-paced trips or regular outdoor wear.
Take a look at the selection of Kilpi softshell trousers.
Waterproof clothing for children – details you should not forget
Children lose heat faster than adults and, at the same time, move much more intensively. This means higher demands on breathability and durability.
When choosing children’s jackets and trousers, pay attention to:
- an extended back,
- adjustable cuffs and hood,
- reflective elements,
- robust zips,
- a comfortable fit that does not restrict movement.
Buying clothing “for several years ahead” usually does not make sense. Trousers or a jacket that are too large reduce functionality and thermal comfort.
For children, choose waterproof outdoor clothing with a comfortable fit, durable materials and practical details that make movement in wet weather easier.
How to layer waterproof clothing?
Hardshell only works properly when you wear suitable layers underneath.
- The first layer wicks sweat away from the body → ideally functional underwear or merino.
- The second layer insulates and retains warmth → fleece or lightweight softshell.
- The third layer protects against wind and rain → a hardshell jacket or trousers.
If you wear a cotton T-shirt under a membrane, sweat will stay inside and you will be wet regardless of the jacket’s quality.
How to care for waterproof clothing so it lasts as long as possible?
Proper care determines whether the membrane lasts one season or several years.
Grease, sweat and dirt gradually clog the membrane pores and reduce breathability. When water stops forming droplets and starts soaking into the outer fabric, most people think the jacket has “lost its waterproofness”. In reality, the DWR finish has often stopped working, while the membrane itself is usually still fine.
How to wash membrane clothing properly?
Use a special detergent for waterproof clothing, such as Nikwax Tech Wash, Grangers or Fibertec. Regular washing powder leaves residues that can damage the membrane. Wash clothing at 30 °C and do not use fabric softener. Dry on a low temperature or leave to air dry.
Gentle heat helps restore the DWR finish. If water no longer runs off the material, it is a good idea to use an impregnation spray or wash-in impregnation.
Frequently asked questions
1. What water column rating is enough for mountain hiking?
Ideally at least 15,000–20,000 mm. For more demanding conditions or multi-day trips, even more.
2. Do I need waterproof trousers, or is a jacket enough?
In light rain, a jacket may be enough. In the mountains or during longer rain, trousers are essential for keeping warm.
3. What is the difference between hardshell and softshell?
Hardshell is fully waterproof and protects against rain. Softshell is more breathable, more comfortable and suitable for milder conditions.
4. How do I know that a jacket has stopped being waterproof?
If water stops forming droplets and starts soaking into the outer fabric, the DWR impregnation probably needs to be restored.
5. What detergent should I use to wash a waterproof jacket?
Use a special detergent designed for membrane and technical clothing. Regular washing powder and fabric softener are not suitable.
