How to choose a ski jacket

1. Waterproofing

It is given in millimetres of water column (for example, 10,000 mm): the higher it is, the more water the fabric holds before it soaks through. For wet snow or rainy days you want more; for dry cold, less is enough. Also check whether the seams are sealed: that's where water gets in even when the fabric is waterproof.

2. Breathability

It is usually given in g/m²/24 h: the higher it is, the better sweat escapes. If you ski hard or go ski touring, it matters as much as waterproofing. Underarm vents help a lot.

3. Insulated or shell only

• Insulated: warm on its own; comfortable for cold days and relaxed skiing. Synthetic insulation still keeps some warmth when wet; down is warmer for its weight but loses performance when damp.
• Shell only: not warm by itself; you add warmth with layers underneath. More versatile if temperatures change a lot.

4. Think in layers

A base layer that wicks sweat (preferably not cotton), a mid layer such as a fleece, and the jacket on top. That way you adjust your warmth to the day.

5. Details you notice on the slopes

• An inner snow skirt that keeps snow out.
• A hood that fits over your helmet.
• Adjustable cuffs and covered zips.
• A handy pocket for your lift pass.

6. Size and fit

Try it on with your mid layer and raise your arms: your back shouldn't be left exposed. A slightly longer cut protects you more when you sit on the chairlift.