Smartwool PhD Ski Ultra Light Socks

$12.95 18.95 save up to 32%
Some Discontinued. Limited to stock on hand.

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Don't settle for anything but the best when it comes to performance footwear. Treat your feet to the high-performance fit and function of the SmartWool PhD Ski Ultra Light for Men and Women.

Designed with SmartWool's 4-Degree Banded fit system for all day comfort, WOW (wool on wool) Technology for shock and abrasion resistance in high impact zones, and Duroyarn™ reinforcements for added durability, the PhD Ski Ultra Light is the ideal sock for lift-access or backcountry skiing when you desire a super thin, durable, ski sock that ward of blisters and provide all day comfort. These Smart wool socks are unisex.


  • 58% wool, 40% nylon, 2% elastic
  • 4-Degree Banded Fit System for all day performance fit
  • WOW (wool on wool) Technology in High Density Impact Zones to reduce shock & abrasion
  • SmartWool inside for moisture, temperature, and odor control
  • Duroyarn™ reinforcement for added comfort & durability
  • Strategic Mesh Zones for maximum ventilation
  • Height: Over-the-calf
  • Cushioning: Non-cushioned

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Review Summary

5 out of 5

5 Reviews

  • Build quality: 1
  • Great design: 1
  • Performance: 1

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
Fit: 3 / 5

5 Ratings & Reviews

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
FitClothes: 3 / 5
from Illinois
55-64 yrs

Best choice for skiing
March 10, 2011

This sock has become my number 1 choice for downhill skiing. Thin and warm. Great for my ski boots, which have a very tight fit. Thicker socks can create pressure points inside my boots, and interfere with circulation. I also sometimes use them when I need a little extra warmth in my street shoes. They make an excellent liner. I bought 4 pair.

Pros: Great design, Build quality, Performance

Thin and comfortable with tight ski boots.
November 30, 2009

When I had my new ski boots fitted, the fitter had me change my socks to the Smartwool. The discomfort I was feeling disappeared immediately.

Great Socks, thin
February 14, 2010

I wear these socks for skiing, and they are great quality, thin ski socks that keep my feet as warm as thicker socks, yet allow me to wear the correct size ski boot so my foot isn't sliding around. I highly recommend them!

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
from Washington, DC

Great socks - thin & they stay up
December 08, 2010

Bought these for my husband to wear with business clothes. He was searching for socks that stay up, and these do. He's very happy with them -- they're thin enough for the office but they stay up on the walk to work. Especially nice now that the temperature has plummeted. His regular size (L) fit well.

warm but not bulky
November 28, 2009

These socks are perfect for my son, who is an alpine ski racer. They are thin but warm, and they hold up well. They are the only ski socks he will wear.

Also Available

Smartwool PhD Ski Ultra Light Socks Photo

Black and Silver.

Available sizes, while supplies last, include size small, size medium, size large and size extra large: s, m, l, xl.

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