Smartwool PhD Running Light Micro Socks


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Made with just a little cushion underfoot, but still low profile and cool for summer running, the Smartwool PhD Running Light Micro Socks will keep your feet happy and going strong for miles. Soft merino wool wicks away sweat and regulates temperature while elastic bands keep these SmartWool socks snug and mesh panels speed up dry time.


  • Fabric: 71% merino wool, 27% nylon, 2% elastane
  • 4 Degree Elite Fit System uses two elastics for greater stretch and recovery to keep the sock in place; ankle band, upper instep band, lower instep band, arch band
  • ReliaWool Technology in high impact areas provides longer lasting protection; more durable than normal wool
  • Strategic mesh zones for maximum ventilation
  • Low profile and durable virtually seamless toe
  • 1x1 ribbed welt
  • Achilles pad
  • 1.75-inches overall height
  • Height: Micro
  • Cushioning: Light Half Cushion

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Review Summary

5 out of 5

2 Reviews

  • Lasts forever: 2
  • Performance: 2
  • Build quality: 1
  • Great design: 1

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5

2 Ratings & Reviews

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
from San Diego, Cali
35-44 yrs

Best socks available
January 04, 2013

I have been purchasing Smartwool socks for years, For one good reason, They are the best socks available. I purchase these particular ones for casual activity and they impress everytime, Quality, comfort and style, You can't go wrong

Pros: Great design, Build quality, Lasts forever, Performance, Great value
45-54 yrs

My favorite running socks.
October 21, 2013

These are great for the cooler weather. They fit well and stay put. I have many different styles of Smart Wool socks. They wear well and are very comfortable.

Pros: Lasts forever, Performance

Also Available

Smartwool PhD Running Light Micro Socks Photo

Arctic Blue, Black, Black/ White, Bright Red, Graphite, Liberty 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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