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SmartWool PhD Run Graduated Compression Socks - Merino Wool, Over the Calf (For Men and Women)

Item #6409P
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About SmartWool PhD Run Graduated Compression Socks - Merino Wool, Over the Calf (For Men and Women)

2nds. SmartWool's PhD Run Graduated Compression lightweight socks help ensure improved blood flow, better support and shorter recovery times.


Specs about SmartWool PhD Run Graduated Compression Socks - Merino Wool, Over the Calf (For Men and Women)

  • Lightweight
  • Height: Over the calf
  • Fabric: At least 40% merino wool the remainder nylon and elastane
  • Care: Machine wash, tumble dry
  • Made in United States of America (yarn imported)
  • Visit our Wool Guide
  • US shipments only


Do you own this product? Write a review and help others with their buying decisions!

4.305785 5 Overall Rating: 4.3 Based on 121 reviews

Most Helpful 5-Star Review

Reviewed by Tryker13 from Central Virginia on Thursday, September 19, 2013
I've been a SmartWool fan for years - a high quality product and STP's unbeatable prices. When I saw these compression socks, I had to

give them a try. I have lymphedema in my lower left leg and I'm on my feet all day at work. When I took these socks off this evening, there was absolutely

... Read More
Your search for "" returned reviews for SmartWool-PhD-Run-Graduated-Compression-Socks-Merino-Wool-Over-the-Calf-For-Men-and-Women Remove reviews search

Question & Answer

Questions about this product? Get answers from community and staff experts.

  • “What compression strength are these?”
    Asked by Marian from Nola on 2/4/2015 4:19:02 PM
    • I have no idea whether there is some objective scale of compression, but it would seem that would depend on the size of your leg. I wear a size 7.5-8 women's shoe, or 6 men's, but my calves are pretty large. I got the small. They are tight, but comfortable.
      Answered on 2/4/2015 4:22:56 PM by Becky from Wisconsin
    • I believe they're 20-30 mmHg but you can double check that on the SmartWool website.
      Answered on 2/4/2015 4:41:40 PM by Nicknameless from Washington
    • Not listed but if you can find the exact match on the Smart Wool site you may be able to get your answer. These are very snug for sure, had to size up just to get them on.
      Answered on 2/4/2015 4:45:38 PM by grammie in nh from nh
    • I'm sorry that I don't know the exact answer. I find them helpful for giving my lower legs a break. I would guess that they are a medium compression.
      Answered on 2/4/2015 4:53:46 PM by Old Biker from AZ
    • These are not graded like prescription or diabetic socks. I would consider them medium compression. I have what I would consider normal legs and these are snug. If you have large ankles then they will be tight.
      Answered on 2/4/2015 6:04:04 PM by Chris from Waltham, MA
    • on the packaging I received, it says the compression is 20-30
      Answered on 2/4/2015 8:51:53 PM by dt from ohio
    • My guess is 15-20 mmHg. These were tight on me so they felt comparable to a 20-30mmHg sock. I do not think the are rated that high though.
      Answered on 2/5/2015 8:09:28 AM by jmmysms from ATL
    • I cannot say with certainty, however, working as a nurse and placing TEDS socks on post-operative patients, and on myself after surgery, these socks feel like a minimum 20mmHg or a little more. Its an effort to put on and remove... Not just great for running/recovery time, but great for long haul transoceanic flights as well which is what I bought them for. Hope this helps.
      Answered on 2/5/2015 8:57:12 AM by Danielle from Nebraska
    • These are "mid-grade compression support"
      There does not seem to be a compression number on the packaging.
      Great socks!
      Answered on 2/9/2015 4:50:38 PM by Anonymous from Western MA
  • “Where is the sizing chart for women? I wear a size 9.5 shoe.”
    Asked by MB from Ontario on 11/3/2014 9:37:14 AM
    • I also wear a women's 9.5 shoe. The size Large fits perfectly.
      Answered on 11/3/2014 10:24:58 AM by Maggie May Run from Chicago
    • If you place your cursor on the "small, medium, or large" options/buttons, then a small dialogue box should appear with the proper sizes for both men and women. If you are a 9.5, then a medium would be your best bet...but you are on the edge. The medium 7-9.5 in women's sizing. Different brands run different sizings, you might want to find a brand that includes the 9.5 as not being either the max or min size option.
      Answered on 11/3/2014 11:11:07 AM by Woodsdeepin from Kentucky
    • Not sure. I often find that the sizing charts don't help me. For me as a size 8 shoe with about a 13" calf, the smalls were way too small. I've got two pairs of Large teal colored ones that work well, though at the end of a 10 hour shift, there's a red indentation on the back of my legs. A pair of the black Large compression ones seem a lot smaller, and not wearable for work. Not sure if that's a effect of the "factory seconds" lot. My guess is that the calf size matters more for these than the foot size...
      Answered on 11/3/2014 11:54:30 AM by pkp from chicago
    • I wear 9 1/2 womens too, I bought a Large and I couldn't even get them on.
      Answered on 11/3/2014 12:08:50 PM by grammie in nh from nh
    • My experience with shoes and socks are women's sizes are 1.5 to 2 sizes below a mens (e.g.; women's size 8 will be man's size 6 or 6.5). The same crosses over for socks. I suggest you consider your sock size a women's 10 and look for what would fit a men's 8. I have these socks and they run a titch on the small side, even when being careful to line dry them.... Regardless - love the socks! Have 2 pairs - black and off-white....
      Answered on 11/3/2014 4:54:10 PM by Danielle from Nebraska
    • just put ur cursor on a size s/m/l and it will tell u what size shoe it fits
      Answered on 11/3/2014 7:16:33 PM by john trucker from new york
    • Michelle, I wear a 9.5 shoe, also. I order the medium but alsways stretch the length of the foot when I wash them and never put them in the dryer. I tried the large one time but they are too long and bunch up in the toe of my shoes. Be aware that if you need compression around your ankle, these are not the best socks. If you look closely, you'll see what looks like a narrow ribbing around the ankle. That has less compression than the part above the ankle. This allows my repaired ankle to swell. Product #1940p has even compression, if that is what you need.
      Answered on 11/3/2014 7:34:51 PM by Wildflower lady from North Texas
    • Hi Michelle,

      I wear a size 8.5 women's shoe but I have large calves so I buy the large compression socks. I guessed and it has worked out well.
      Answered on 11/6/2014 6:47:44 PM by Boot lover from Ohio
  • “What shoe size are these socks ? They are for men and women so I am unsure what size I need. I wear size 8 women's shoes.”
    Asked by Traveling typhoon from Idaho on 10/5/2013 11:41:16 AM
    • If you hover your mouse over or click on the sizes the corresponding shoe size will appear. I.E. S (M Shoe Size 3-5½, F 4-6½)
      Answered on 10/7/2013 10:06:36 AM by Jack from Sierra Trading Post

About SmartWool

Born in the Rocky Mountains of Colorado, the SmartWool clothing brand launched in 1994 as a small company with roots in the snowsport industry. Quickly becoming world-famous for SmartWool socks crafted of super-soft, breathable and odor-resistant merino wool, SmartWool has continued to evolve, now offering a wide range of fantastic apparel for active lifestyles, including SmartWool ski socks, base layers, underwear, sweaters and even jackets. Thanks to a commitment to using only the highest quality fibers and sporty, modern designs, SmartWool socks and clothing continue to exceed the demands of outdoor lovers everywhere.