Smartwool PhD Run Light Micro Socks at Road Runner Sports
Men's & Women's Running, Walking & Jogging Shoes and Clothing at Road Runner Sports w/ Free Shipping!
Best Price Guarantee: Feel Great VIP! ALL Your VIP Benefits apply every day

Find Your Perfect Fit

Find Your Perfect Fit

It's so easy!

Smartwool PhD Run Light Micro Socks

Smartwool PhD Run Light Micro

Item #SMT120

Get This Price
   Loading product details ...

Reviews (6)
Need Help?

Product Description:

SMARTWOOL® PHD RUNNING LIGHT MICRO :: Get the comfort and wicking benefits of Merino Wool without extra bulk. The light and thin SmartWool® PhD Running Light Micro sock is lightly cushioned, offering perfect protection just where you need it. Say bye bye to soggy feet with the naturally breathable fabric. And don't fuss with stretched out socks; resilient wool springs back into shape wash after wash!

Features & Benefits:

  • New 4 degree Elite Fit System uses two elastics for greater stretch and recovery to keep the sock in place
  • Patent pending ReliaWool Technology in the high impact areas provides the longer lasting protection to keep feet comfortable
  • Flat knit durable toe seam for high burst strength
  • Achilles pad
  • 1x1 ribbed welt
  • 1.75" overall height
  • 71% Merino Wool/27% nylon/2% Elastane
Product SMT120 Review

Very Nice Sock


Seems well constructed, the Large size fits my 10 double EE fine, does not sag into the shoe, provides enough cushion but not overly sweaty.

Sonoran the Dog

Tucson, Az


Great Cushioned Sock


Great cushioning, but the sock does wear out in the heel. In my experience, they last about a year. Overall, my fave socks for running.

Beach Bummer



Gonna buy more of these


I wear these all the time, they have just the right amount of cushioning and the fabric is great.

Big Wally

Seattle, WA


Too Thick in toes and heel


Thought these were thinner like other smart wool products I have...too thick on toes/heels for me...better as a warm weather sock.




These socks are great.


I've just worn them a few times, but they are comfortable and don't slide up under my foot.


Colorado Spgs, CO


My favorite running sock ever!


Just ran a 100 miler, hot, wet conditions, no blisters.


South Lake Tahoe, CA


Smartwool PhD Run Light Micro Socks

4.3 6


Your Help Is Here

Shop with confidence knowing your team of Fit Experts is waiting to answer all your questions. You can always find your perfect product and your perfect fit. Your Road Runner Sports Fit Experts will make sure you get exactly what you want and have tons of fun in the process! Give us a call, chat, or email!

Call 800-743-3206 to

  • Get help with your order or finding a product
  • Learn how to find your perfect fit for shoes, apparel and gear based on your feet, body, and training goals
  • Or just to have a great time talking about life, liberty and the pursuit of running!!!
You May Also Like