REI.com
  • Online: www.REI.com
  • URL for this product:
  • From the U.S. and Canada — Call 1-800-426-4840
  • Mon. through Sun., 4 a.m. through 11 p.m. PT.
  • International — Call 1-253-891-2500
  • Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.
SmartWool PhD Running Ultra Light Micro Socks
graphite/silverzoomZoom image

SmartWool PhD Running Ultra Light Micro Socks

Item # 767170

$9.69$12.95*

REDUCED PRICEYou Save 25%

1. Size Chart

2. Qty

3.

Product Rating
Share It
Email this to a friend Email this to a friend
Bookmark and share Bookmark and share

These highly engineered, noncushioned SmartWool PhD micro-height running socks have a doctorate degree in performance and comfort.

  • Soft merino wool provides excellent temperature control, odor control and moisture management; reinforced with stretch nylon to maintain fit
  • SmartFit system II uses a 4-point banded compression system to deliver a secure fit above and below heels, under arches and across insteps
  • SmartFit system II incorporates a contour flex zone at the front of each ankle to eliminate bunching, slipping and sagging
  • Features padded Achilles tabs to protect the Achilles and help secure the fit
  • High-density impact zones under heels and forefeet (where impact is greatest) protect against shock and abrasion
  • Low-density zones under arches and at Achilles reduces weight without sacrificing fit or support
  • Strategic Mesh Zones offer maximum ventilation in critical areas to vent perspiration and heat
  • *Discount will be applied when you check out. Offer not valid for sale-price items ending in $._3 or $._9

Made in USA.

Item 767170

SmartWool PhD Running Ultra Light Micro Socks Specs

Specification

Description

Fabric62% merino wool/37% nylon/1% elastic
Sock heightNo-show
GenderUnisex

SmartWool PhD Running Ultra Light Micro Socks Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
SmartWool PhD Running Ultra Light Micro Socks
 
4.3

(based on 13 reviews)

85%

of respondents would recommend this to a friend.

Pros

  • Comfortable (13)
  • Wicks away moisture (13)
  • Good design (11)
  • Regulates temperature well (10)
  • Durable (9)

Cons

    Best Uses

    • Running (12)
    • Daily use (9)
    • Travel (4)
    • Working out (4)
    • Team sports (3)
    • Reviewer Profile:
    • Conditioning exerciser (4), Frequent exerciser (4), Occasional exerciser (3)

    Reviewed by 13 customers

    Sort by

    Displaying reviews 1-10

    Back to top

    Previous | Next »

    May

    11

    2008

    (2 of 2 customers found this review helpful)

     
    5.0

    best running socks I've ever owned

    By OC_Runner

    from Orange County, CA

    About Me Competitive Athlete

    Site Member

    Pros

    • Comfortable
    • Durable
    • Good Design
    • Stylish
    • Wicks Away Moisture

    Cons

      Best Uses

      • Running

      Comments about SmartWool PhD Running Ultra Light Micro Socks:

      I use these socks on all my runs. I recently completed a marathon in these - in the rain. I had one small blister in my usual spot, but other than that, these socks remained snug and comfortable. I've logged a few hundred miles on 1 pair and they are holding up pretty well with only slight pilling on the heels.

      • Fit:
      • Feels true to size

      Bottom Line Yes, I would recommend this to a friend

      (2 of 2 customers found this review helpful)

      Was this review helpful? Yes / No

       - You may also flag this review

      Please let us know what kind of issue this is:

      May

      23

      2009

      (1 of 1 customers found this review helpful)

       
      5.0

      Now I'm addicted to running

      By WigB

      from Bossier City, LA

      About Me Conditioning Exerciser

      Site Member

      Pros

      • Comfortable
      • Durable
      • Good Design
      • Regulates Temperature Well
      • Wicks Away Moisture

      Cons

        Best Uses

        • Daily Use
        • Running
        • Travel
        • Working Out

        Comments about SmartWool PhD Running Ultra Light Micro Socks:

        I had been searching for a good running sock for quite some time. Anything more than 3 miles in any cotton sock would give me blisters. Doing some research I found these and tried a couple pair. The first two pair lasted me over 300 miles. They finally started wearing-out around my normal hot spots on some of my toes. Never had a blister though. As I have started to run longer and longer distances I noticed that my hot spots come back around mile 8-10 so I'm trying the PhD Running Light (instead of these Ultra Lights). They seem to work well so far.

        These socks also work great for traveling. My feet never get too hot on airplanes or long car trips.

        • Gift:
        • No
        • Fit:
        • Feels true to size

        Bottom Line Yes, I would recommend this to a friend

        (1 of 1 customers found this review helpful)

        Was this review helpful? Yes / No

         - You may also flag this review

        Please let us know what kind of issue this is:

        Apr

        13

        2009

        (1 of 2 customers found this review helpful)

         
        1.0

        Love the Brand, but Phd's don't hold up!

        By So cool, So. Cal.

        from Greenwich, CT

        About Me Frequent Exerciser

        Site Member

        Pros

        • Comfortable
        • Wicks Away Moisture

        Cons

        • Heels disappear with wear
        • Wears Quickly

        Best Uses

        • Daily Use
        • Running
        • Team Sports

        Comments about SmartWool PhD Running Ultra Light Micro Socks:

        Not much to say. I have returned 5 pairs between my son and I because of worn-out heels(the last pair was only two months old!) That being said, I love the Smartwool brand. They feel great on the feet. Snug (without being tight)and fit great. Most of their lines are well made...except the PhD line. I have had no problems with the Hikers and light hikers. I only wish that Smartwool would make a larger sock for big feet like mine.

        • Gift:
        • No
        • Fit:
        • Feels true to size

        Bottom Line No, I would not recommend this to a friend

        (1 of 2 customers found this review helpful)

        Was this review helpful? Yes / No

         - You may also flag this review

        Please let us know what kind of issue this is:

        Jul

        22

        2008

        (1 of 2 customers found this review helpful)

         
        5.0

        Great for sweaty feet

        By Active Lady

        from Puget Sound, WA

        About Me Gym Rat

        Site Member

        Pros

        • Comfortable
        • Durable
        • Good Design
        • Regulates Temperature Well
        • Stylish
        • Wicks Away Moisture

        Cons

          Best Uses

          • Daily Use
          • Running

          Comments about SmartWool PhD Running Ultra Light Micro Socks:

          Have been addicted to SmartWool socks for 10 years. Just discovered this style: Surprisingly perfect for running. Tried them first on a 10-mile run: not one issue. They stayed in place. No adjusting necessary. Store was out of women's PhD styles, so I bought this: Works fine for women. Even looks creative with leather sandals when out and about. Especially perfect for people with feet that perspire frequently. When I discovered SmartWool, I pitched all cotton socks.

          • Fit:
          • Feels true to size

          Bottom Line Yes, I would recommend this to a friend

          (1 of 2 customers found this review helpful)

          Was this review helpful? Yes / No

           - You may also flag this review

          Please let us know what kind of issue this is:

          Apr

          13

          2008

          (1 of 1 customers found this review helpful)

           
          5.0

          Worth every penny

          By runner12

          from New York, NY

          About Me Competitive Athlete

          Site Member

          Pros

          • Comfortable
          • Good Design
          • Regulates Temperature Well
          • Wicks Away Moisture

          Cons

            Best Uses

            • Daily Use

            Comments about SmartWool PhD Running Ultra Light Micro Socks:

            These socks do not stay wet with sweat. Period. You will never wear cotton socks again - ever. Resists all odor.

            • Fit:
            • Feels true to size

            Bottom Line Yes, I would recommend this to a friend

            (1 of 1 customers found this review helpful)

            Was this review helpful? Yes / No

             - You may also flag this review

            Please let us know what kind of issue this is:

            Feb

            26

            2008

            (1 of 1 customers found this review helpful)

             
            5.0

            Great running sock

            By Outside Daren!

            from Washington

            About Me Gym Rat

            Site Member

            Pros

            • Comfortable
            • Durable
            • Good Design
            • Regulates Temperature Well
            • Wicks Away Moisture

            Cons

              Best Uses

              • Running

              Comments about SmartWool PhD Running Ultra Light Micro Socks:

              I bought these socks based past performance with smartwook hiking socks and skiing/snowboarding socks. These socks work real well. Ran 10 miles in them recently and had no problems. Socks feel like they will be durable.

              Bottom Line Yes, I would recommend this to a friend

              (1 of 1 customers found this review helpful)

              Was this review helpful? Yes / No

               - You may also flag this review

              Please let us know what kind of issue this is:

              Oct

              17

              2009

               
              2.0

              Disappointing

              By amsies22

              from Burlington, VT

              About Me Occasional Exerciser

              Site Member

              Pros

              • Comfortable
              • Good Design
              • Stylish
              • Wicks Away Moisture

              Cons

              • Wears Quickly

              Best Uses

              • Running

              Comments about SmartWool PhD Running Ultra Light Micro Socks:

              I was so excited to get these socks after reading all of the rave reviews. I was very pleased when I tried them on and used them - great fit, great support, stylish, etc. Unfortunately, I only wore them for about 2 months at 1-2x/wk before they started to get thin on the bottoms. For [$] a pair, they should last a lot longer than that.

              • Gift:
              • No
              • Fit:
              • Feels true to size

              Bottom Line No, I would not recommend this to a friend

              Was this review helpful? Yes / No

               - You may also flag this review

              Please let us know what kind of issue this is:

              Oct

              7

              2009

               
              4.0

              These are a keeper

              By setch

              from Great Falls, VA

              About Me Conditioning Exerciser

              Site Member

              Pros

              • Comfortable
              • Durable
              • Regulates Temperature Well
              • Wicks Away Moisture

              Cons

                Best Uses

                • Running

                Comments about SmartWool PhD Running Ultra Light Micro Socks:

                I wear these socks on my trail runs. They are comfortable and durable...so far. They did shrink a little upon the initial washings, but still fit fine.

                • Gift:
                • No
                • Fit:
                • Feels true to size

                Bottom Line Yes, I would recommend this to a friend

                Was this review helpful? Yes / No

                 - You may also flag this review

                Please let us know what kind of issue this is:

                Jul

                20

                2009

                 
                5.0

                Someone is hugging my feet!

                By odball1234

                from Oak Harbor, WA

                About Me Occasional Exerciser

                Pros

                • Comfortable
                • Durable
                • Good Design
                • Regulates Temperature Well
                • Stylish
                • Wicks Away Moisture

                Cons

                • none

                Best Uses

                • Daily Use
                • Hiking
                • Running

                Comments about SmartWool PhD Running Ultra Light Micro Socks:

                i bought these because a friend was in love with them and now so am i. i took them to Rome, Italy with me and wore them while i walked all day in 88 degree weather. my feet didn't get hot and the socks wick moisture away from my foot like nobody's business. these are the most awesome socks i have ever owned! and i Love them!

                • Gift:
                • No
                • Fit:
                • Feels true to size

                Bottom Line Yes, I would recommend this to a friend

                Was this review helpful? Yes / No

                 - You may also flag this review

                Please let us know what kind of issue this is:

                Dec

                28

                2008

                 
                4.0

                High end socks

                By mossrunner

                from Seattle, WA

                About Me Conditioning Exerciser

                Site Member

                Pros

                • Comfortable
                • Durable
                • Good Design
                • Regulates Temperature Well
                • Stylish
                • Wicks Away Moisture

                Cons

                • Bunches Up

                Best Uses

                • Daily Use
                • Running
                • Working Out

                Comments about SmartWool PhD Running Ultra Light Micro Socks:

                I love these and purchased them a couple weeks prior to running a marathon, as my usual custom. I am an in-between size, so it took a couple washings to get them to shrink down a bit. They were a bit too large, and bunched, when I first wore them. I wear them for everything.

                • Gift:
                • No
                • Fit:
                • Feels too big

                Bottom Line Yes, I would recommend this to a friend

                Was this review helpful? Yes / No

                 - You may also flag this review

                Please let us know what kind of issue this is:

                Displaying reviews 1-10

                Back to top

                Previous | Next »

                SmartWool PhD Running Ultra Light Micro Socks Related Items

                Other items like this:

                You might also like:

                Join REI and Enjoy the Benefits

                Members are eligible for an annual refund on qualifying purchases. Plus, they enjoy many more benefits. Get a lifetime membership for $20.

                Add an REI membership to my order.

                * Intermediate markdowns may have been taken.

                How are we doing? Give us feedback on this page.

                • Shopping Cart 
                • |
                •  
                • Buy REI Gift Cards
                • REI Gift Cards
                • Fast, easy and one size fits all.
                • Buy now!
                • Join REI today!
                • REI Membership
                • REI member benefits include an annual refund (typically 10% on eligible purchases).
                • Join REI today!
                • Sign up for REI Gearmail®
                • and get 15% off selected items!
                • Store Locator
                • Locate an REI store near you.