What to wear skiing — layers, materials, and staying warm

Staying warm and dry makes the difference between a great day and a miserable one. You don’t need the most expensive gear — you need the right materials and layers.

Avoid cotton

Cotton holds moisture. When you sweat or get snow on your clothes, cotton stays wet and cold next to your skin. In the mountains that can lead to chills, discomfort, and in serious cases hypothermia.

Skiers often say “cotton kills” — avoid cotton in base layers, socks, and mid layers.

Use synthetics (e.g. polyester) or merino wool instead. They wick moisture and keep insulating even when damp.

Base layer (next to your skin)

A long-sleeve top and long johns (or leggings) in merino or synthetic.

This layer should fit snugly and wick sweat away
3/4-length long johns are ideal so you don’t have extra fabric bunching inside your boot — only your sock should be in the boot

Mid layer (insulation)

A fleece jacket or vest, or a thin synthetic/down layer. This traps warmth.

You can add or remove it depending on the temperature
Very cold days: vest + light jacket
Milder days: one piece is enough

Outer layer (jacket and pants)

You need waterproof and windproof jacket and pants.

What to look for

Waterproof rating (e.g. 10,000–15,000 mm) and breathability on the tag or product page
Resort skiing in decent weather: 10,000–15,000 is often enough
Wetter, warmer regions (e.g. Pacific Northwest): aim higher (around 20,000) so you stay dry in rain and heavy snow

Insulated vs shells

Insulated — Warmer, simpler. One piece does it all.
Shells — Lighter, more flexible. You add mid layers as needed. Popular in variable conditions.

Socks

Ski-specific socks in merino or synthetic.

Thin to medium thickness — fit smoothly, no creases or folds inside the boot
One pair only — doubling up can cut circulation and make your feet colder
Creases = pressure points and cold spots

Gloves or mittens

Waterproof gloves or mittens.

Mittens are usually warmer (fingers share heat); gloves give more dexterity
If your hands get cold easily, choose mittens
Check for a waterproof/breathable rating similar to your jacket

Head and eyes

Helmet — see our post on helmets. Under it, a thin beanie or headband if it’s cold
Goggles or sunglasses — protect your eyes from sun, wind, and snow. UV is stronger at altitude. Goggles are better in snow or wind; make sure they fit with your helmet and have anti-fog treatment

Sun protection

At altitude the sun is strong. Use sunscreen on your face, neck, and any exposed skin. Reapply during the day. Lip balm with SPF helps too.

Renting outerwear

If you don’t own a ski jacket or pants, many resorts and shops rent them. It’s a good option for your first trips so you can stay dry without buying everything at once.

Summary

No cotton. Use merino or synthetic base and mid layers, waterproof/breathable jacket and pants, ski socks, waterproof gloves or mittens, helmet, and eye and sun protection. Dress in layers so you can adjust as the day changes.