Ski touring jackets need to be versatile enough to handle overheating on the ascent, while also protecting against wind and snow at the summit. When it comes to jackets, it can be hard to know where to start with all the different models available. So, which jacket should you choose for ski touring?
Key takeaways:
- The three-layer system makes it easy to adapt to changing temperatures.
- A ski touring jacket must be breathable and protective.
- The choice between hardshell and softshell depends on your activity and the weather conditions.
- A good jacket is lightweight, well-cut and well thought-out.
The three-layer system applied to ski touring
In ski touring, it can be tempting to reach for an alpine skiing jacket. But that's a mistake. Alpine skiing jackets are designed to protect against the cold, particularly during static phases. They are poorly breathable, heavy and rigid. They risk restricting your movements, wearing you out unnecessarily and becoming uncomfortable. These needs vary depending on the discipline, which explains the difference between ski touring and nordic ski touring.
To choose the right ski touring outfit, the three-layer system is ideal. It helps regulate body heat easily during exertion. The jacket, used as a protective layer, acts as a barrier against the elements, while still allowing temperature regulation. It shields against wind, snow and bad weather while letting perspiration escape.
Ski touring involves ascents, descents and challenging sections in between. The climb is long and physically demanding. Breathability is essential — without it, you risk a pressure-cooker effect. The descent is short, fast and far less physical. With greater exposure to the elements, the ski touring jacket must be protective to retain body heat.
Tips for choosing the right ski touring jacket
Breathability
Several factors help determine which ski touring jacket to go for. Breathability is the key criterion, as it allows sweat to be expelled during exertion. Two main indicators are used to measure jacket breathability: RET and MVTR.
The lower the RET value, the more breathable the fabric — and the higher the MVTR value in g/m²/24h, the more efficiently moisture vapour is expelled. For excellent breathability, we recommend choosing a ski touring jacket with a RET below 6 or a MVTR of 20,000 g/m²/24h.
Waterproofing
Like breathability, waterproofing is crucial in ski touring jackets. It indicates the fabric's ability to resist water penetration and is measured in Schmerber.
The higher the Schmerber rating, the more waterproof the material. Values typically range from 10,000 mm (satisfactory protection) to 30,000 mm (extreme protection). In ski touring, you should choose your waterproof rating based on your activity. If you're out in cold, dry conditions on short trips, maximum protection is not necessarily essential.
Construction type
The right jacket depends on the conditions and the intensity of your activity. Hardshell jackets often feature a three-layer membrane. They are durable, protective and waterproof in all conditions. Primarily worn on the descent, they are also ideal in unstable weather, wet snow or committing outings.
Softshell jackets are windproof, water-repellent, more flexible and more breathable than hardshell jackets. They are perfect for intense ascents, cold and dry conditions, and day outings. However, they are not sufficient when the weather turns bad.
Finally, hybrid jackets, including those offered by Cimalp, are a great alternative for skiers looking for versatile use. They provide excellent protection in exposed areas while ensuring good freedom of movement and increased breathability elsewhere.
The details that matter
A few extra details help determine which ski touring jacket to go for. Underarm vents are extremely useful on the ascent. They allow you to quickly release excess heat without removing the jacket.
The hood must be helmet-compatible. Worn over the helmet, it provides effective protection against wind and snow on the descent, without restricting movement or visibility.
Finally, weight and packability should not be overlooked either. A lightweight jacket helps you feel less fatigued and stay more comfortable. The hardshell jacket, often used on the descent or in bad weather, should be able to pack away easily into your bag.
What mistakes should you avoid?
The most common mistake is choosing an overly insulated ski jacket, often lined with wadding or down. While it's tempting to layer up against the cold, you risk preventing any thermal regulation and actually increasing the risk of getting cold.
Another mistake is neglecting the fit. A jacket that is too loose or too tight can restrict your movements on the ascent, allow cold air in on the descent and become uncomfortable. A good ski touring jacket must have an ergonomic cut, designed for movement and backpack use.
Finally, pocket placement really matters. It's not uncommon to find jackets with pockets — usually low-set — that quickly become inaccessible. To easily stow your beanie, gloves or skins, opt for high-placed pockets that are accessible even when wearing a harness or a backpack.
With all this advice, you should now have a clear idea of which ski touring jacket to choose. The right model strikes a good balance between protection, breathability and comfort, while being designed for the demands of the terrain.
Photo credits: Simon Gerard
