This article covers all the key features to consider when choosing the right ski trousers. Ski trousers are designed to keep you warm and, above all, dry throughout your day on the mountain. In direct contact with the snow, they must be waterproof and breathable while providing comfort through their thermal insulation to keep you warm. softshell trousers can be a great option if you're looking for comfort or greater freedom of movement. This two-dimensional weaving technical technique provides thermal insulation and a windproof effect while remaining flexible and highly breathable.

Choosing waterproof and breathable ski trousers
Waterproofing is measured in mm Schmerber: the higher the mm rating, the more high-performance the membrane. Opt for a rating of 10,000 mm or above to stay dry in all conditions. The trousers must also have fully taped seams.
The breathability of a garment is essential: you start to feel cold when you're wet. Perspiration must therefore be expelled efficiently. Breathability is measured in g/m²/24h: the higher the figure, the better the moisture transfer. Look for a rating of 8,000 g/m²/24h or above.
For more information, check out a dedicated article on waterproofing and breathability in garments.
Optimal insulation for ski trousers
The Thinsulate™ Insulation material is used in the lining of trousers. It is made up of very dense synthetic fibres, providing superior insulation.
The PrimaLoft® technology, featured across many products, delivers lightweight, breathable and warm garments. PrimaLoft® is a lightweight, warm, water-repellent synthetic fabric that retains all its technical properties even when exposed to moisture.
The small details to help you choose the right ski trousers
Ventilation zips
To regulate airflow during your exertions, it is advisable to choose ski trousers fitted with ventilation zips. Located on the outer thighs, they allow you to maintain the right temperature at all times.
Snow gaiters
You'll find integrated snow gaiters under your trousers. These are specially designed to prevent snow from getting into your trousers, particularly during off-piste use in powder snow.
Reinforcements
For beginners and freeriders, a few strategically placed reinforcements at the seat, knees or lower legs can make a real difference in the event of a fall.
Safety beacons
Off-piste enthusiasts can add an extra layer of safety by choosing ski trousers equipped with a tracking beacon such as the RECCO system. These are beacons sewn inside the garment. They reflect the signal from rescue transponders at ski resorts, allowing you to be located more quickly if you are caught in an avalanche.

Matching your ski trousers to your discipline
For ALPINE SKIING
If you spend your days on the slopes, you'll need waterproof and breathable trousers. During this activity, you'll experience moments of cold, particularly on chairlifts. A pair of warm, well-fitted trousers is therefore recommended.
For SKI FREERIDE
You'll need a good waterproof pair of trousers that protects you even when you spend your days in the snow. Resistant components and knee reinforcements are equally important for withstanding abrasion from the elements (roots, branches, rocks, etc.). In terms of fit, go for a fairly loose cut to allow a full range of movement on the slopes. For waterproofing, opt for a rating of at least 20,000 mm. For off-piste enthusiasts, if you want to prioritise safety, you can choose ski trousers equipped with a RECCO tracking device.
For SKI TOURING
Ski touring involves a lot of effort on the ascent and rather less on the descent. That's why your trousers need to offer both good waterproofing and a very high level of breathability. On the other hand, they should not be too insulating. Due to the ascent phases, your ski touring trousers should not keep you too warm. A windproof element protects you from wind and other harsh weather, especially on the descent. In addition, external venting openings are recommended for ski touring, as they allow better ventilation.
For SNOWBOARDING
At first, you'll spend quite a bit of time on your backside and knees. You therefore need trousers with reinforcements in those areas to stay dry. And of course, your trousers must be warm and waterproof. For powder enthusiasts, integrated gaiters are a welcome feature. They prevent snow from getting in during a fall, keeping you warm throughout the day.
For CROSS-COUNTRY SKIING
Cross-country skiing is an endurance sport with significant fluctuations in body temperature. To avoid getting too warm or too cold while maintaining good freedom of movement, opt for tights, which will keep you warm at the start of your session and then wick away perspiration during the effort.
For sizing, beyond standard men's or women's sizes, some brands offer different leg lengths to suit your height.