Smartwool PhD Run Light Mini Socks at Road Runner Sports
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Smartwool PhD Run Light Mini Socks

Smartwool PhD Run Light Mini

Item #SMT121

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Reviews (8)
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Product Description:

SMARTWOOL® PHD RUNNING LIGHT MINI :: Get the comfort and wicking benefits of Merino Wool without extra bulk. The light and thin SmartWool® PhD Running Light Mini sock is lightly cushioned, offering perfect protection just where you need it. Don't worry about blisters, the double layer design prevents rubbing. And the stretchy and durable fabric 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
  • Double layer 1x1 ribbed welt
  • 3.75" overall height
  • 70% Merino Wool/28% nylon/2% Elastane
Product SMT121 Review

Smartwool - the perfect sock


First the disclaimer: I only wear wool socks. I rarely wear anything other than Smartwool. I credit merino wool for keeping my feet warm and heathy. The PHD series wears much, much faster than the standard Smartwool socks. However, the difference the thinner sock makes for road running can not be denied. It has a little extra padding in all the right places and conforms perfectly to the foot to reduce blistering and bruising. (Before I developed bunions I had no blistering with these at all on runs under 14 miles. Now, I get light blistering at 10 miles.) I wear a slightly heavier sock for trail running.

Plain Jane



Toasty warm!


These socks are warmer than I thought they'd be, which is a good thing since I live in Minnesota. I've worn them a few times and the socks have kept my feet so warm that I have been able to wear my lighter running shoes rather than the heavier trail shoes that I wear during the winter. I like the way they fit and look. All around, I love these socks!

Tri running!

Minneapolis, MN


Comfortable and supportive


I have purchased Feetures and Balega socks, but these are the best. They provide support, a decent amount of cushioning and the wicking qualities of wool. But they are not too warm for summer running. They do not slide or bunch.

Uncle Mitch

Syracuse, New York




Very pleased with these socks. I really needed something warm for this time of year and these fit the bill nicely. Plenty warm but not overly thick.


cincinnati OH


Sock it to me!


Great for winter time running. Really keep your feet warm and dry. However, I don't find that they wear well. They seem to get a bit threadbare through the toe.


Niles, Michigan


Best Winter Running Socks


These are the best winter running socks! Love them and highly recommend for anyone that likes to run in cold weather

Pam Runner Girl

Zanesville, OH




only used at around 30 degrees but worked well




great socks


great socks....too bad they never have any.

az runner



Smartwool PhD Run Light Mini Socks

4.9 8


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