Use three layers: a base layer of merino or synthetic fabric that moves sweat off your skin, a mid layer of fleece or light insulation for warmth, and a waterproof, breathable shell jacket and pants. Adjust the mid layer for the temperature. Avoid cotton, which holds moisture. Shell waterproofing is rated in millimeters and breathability in grams; higher numbers handle wetter and harder days.
Layers let you add and remove warmth as the day changes.
The three layers
| Layer | Job | Materials |
|---|---|---|
| Base | Move sweat off skin | Merino, synthetic |
| Mid | Warmth | Fleece, down, synthetic insulation |
| Shell | Block wind and snow | Waterproof, breathable fabric |
Shell ratings
| Rating | What it measures |
|---|---|
| Waterproof (mm) | Resistance to water pressure |
| Breathability (g/m²) | How much vapor passes through |
Hands and feet
Wear one pair of thin ski socks, and gloves or mittens rated for the cold. Mittens are warmer than gloves.
Related: ski vs snowboard for beginners.
Common questions
What should I wear under a ski jacket?
A moisture-wicking base layer and a fleece or light insulated mid layer, adjusted to the temperature.
What does 10K or 20K waterproof mean?
It is the fabric's waterproof rating in millimeters. Higher numbers resist more water pressure.
Is cotton OK for skiing?
No. Cotton holds sweat and snowmelt and makes you cold.