Severin Karrer, Jonas Jäggy
The ascent makes you sweat while the wind on the descent blows cold. The solution is known as the ‘onion principle’. This allows you to adapt what you wear according to the weather and how much you exert yourself. We share the best tips in the videos.
The onion, or layering, principle is also ideal for ski touring. With one wicking layer, one for insulation and one protective layer, you’re all set for any adventure and can easily change what you’re wearing to suit how much you’re exerting yourself. The best part: you stay warm and dry.
The first layer, worn next to your body, wicks moisture and perspiration away from the skin to the outside where it can evaporate. This keeps you dry and your body temperature comfortable. It should also feel good against your skin and not be itchy or smelly.
Quite a few criteria for the bottom layer to satisfy, then! Natural materials such as merino wool or synthetic fibres such as polyester or blended fabrics are particularly suitable for the job. Synthetic fibres are quick to dry and robust. Merino wool has the advantage of being able to absorb a lot of moisture and still have a neutral smell even after being worn several times, making it ideal for a multi-day tour.
Highly effective materials such as fleece, Primaloft, or wool are used as a second layer. They insulate and keep you warm without compromising on breathability. If you’re really pushing yourself, just take off this middle layer to regulate your body temperature.
The outermost layer of clothing is there to keep out the wind and rain. The outermost layer of clothing keeps the wind and rain out. This layer also needs to be breathable so that it doesn't counteract the functions of the bottom two layers. A GORE-TEX® jacket, for example, is suitable as the outermost layer. In dry weather, a softshell jacket is also a good choice – these often offer better breathability than hard shell jackets.
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