Smartwool PhD Run Ultra Light Micro Socks - Men's
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The Smartwool PhD Running Ultra Light Micro socks are ready for training and race day, with a smart updated design that will carry you through the miles in comfort.
Shop similar products- Non-cushioned, precise fit and 1.5-in. no-show height are optimal for pairing with modern minimalist footwear
- 4 Degree Elite Fit System improves comfort and offers great stretch and recovery to keep the socks in place
- Patent-pending ReliaWool technology in high impact areas provides long-lasting protection to keep feet comfortable
- Mesh ventilation zones designed specifically for male runners provide optimum temperature regulation and moisture management
- Virtually Seamless™ toes reduce chafing
- Achilles tab
- 200-needle construction provides high knit density while maintaining ultralight weight
Made in USA.
View the Smartwool PhD Product LineView all Smartwool Men's Running Socks| Best Use | Running |
|---|---|
| Fabric | 50% merino wool/45% nylon/5% elastane |
| Sock Height | No-show |
| Sock Cushioning | No Cushioning |
| Moisture Wicking | Yes |
| Gender | Men's |
| S | M | L | XL | |
|---|---|---|---|---|
| U.S. Men's | 3 - 5.5 | 6 - 8.5 | 9 - 11.5 | 12 - 14.5 |
| EU | 34 - 37 | 38 - 41 | 42 - 45 | 46 - 49 |
Sizing Notes
For socks, please use shoe size.
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I keep coming back to Smartwool
[This review was collected as part of a promotion.] I use these socks for my workouts and running. I like everything about these. The zero cushion is the most comfortable for me, especially where I live in Bangkok Thailand. I love the cut as they sit below the ankle and the top of them sit at the top of my gym and running shoes, so they're very minimal. They take longer to smell than normal cotton socks, so I can rewear them before washing. And they last ages - I just bought several of them to replace some that are around 5 years old. I'll keep coming back. #sweepstakes
Won't stay up
I was really disappointed with this purchase. I love SmartWool socks and have a variety of different styles for different purposes, but these ones refuse to stay up. They invariably end up crumpled up in the toe of my shoes regardless of which shoes I wear. I suggest sticking with the slightly taller socks.
Disappointed....
I have worn the phd micro socks for years and always loved them and was excited about a new improved design. But I am extremely disappointed because it is unwearable..... The heel slides off within 20 steps every time then bunches up under my feet. At first I thought they just need to be washed, but that did not help after several washings. I always buy 10 at a time and when they wear out I buy 10 more to replace them (I am lazy, and don't like to find matching socks so I get them all the same). Well all of the pairs have done the same thing. I recommend sticking to the old style
One lemon
[This review was collected as part of a promotion.] Used for golfing. Hole at seam after three games. I have two pairs from three years ago that are wearing thin never had a hole. So I'm disappointed but not giving up.
Hi there, thank you for sharing your experience with us. Each season, we work to improve product offering, comfort, fit and durability on all products. We're sorry to hear this product didn't work out for you. Thankfully, all of our products are backed by our Go Far. Feel Good.™ Guarantee. You can find all the details about our Guarantee here: https://www.smartwool.com/discover/smartwool-guarantee.html
Durable & feels good
[This review was collected as part of a promotion.] Stays put, low pro can't run in anything else socks #sweepstakes
Good but not great
I have been wearing smartwool socks for 5 years. In fact they're all I wear. I love the brand and quality- 2nd to none. But these socks fall down in the back of my heel and I find myself always pulling them back up from the heel. The ultra light socks also make my feet sweat more than usual. They are cut too high on the top of the instep and too low on the heel. I ordered 6 pairs. My mistake, Should have tried them on first. I usually wear medium but these socks are really tight on top. I'd probably be better off with large but they're too long for me.
don’t expect them to last....
I have several pairs of socks that are getting holes in the toe area. I ordered 7 pairs in March of 2019. Now I have about 3 pairs left. Disappointed in the quality considering their price
I would not buy these Smartwool socks again
Smartwool socks shrink in the wash. I would normally get a size large but after a couple washes Smartwool socks are painfully tight on my toes. I try stretching them out to make them longer but it doesn't work. So now I buy extra large because these shrink down to the correct size. Problem solved. Except with these zero cushion socks. Even the extra large are small and are shrinking up to be too small. The cushioned low ankle socks are great, just get one size larger. These need maybe two sizes larger. Unfortunately, xl is the largest.
Hi there, thank you for your feedback. It's important to hear how we're doing, and we take it very seriously. We want to provide the best product paired with the best service so that you can keep going far and feeling good. Each season, we work to improve product offering, comfort, fit and durability on all products. Our products should not shrink when washing as long as you follow the Care instructions listed on the product page. Thankfully, all of our products are backed by our Go Far. Feel Good.™ Guarantee. You can find all the details about our Guarantee here: https://www.smartwool.com/discover/smartwool-guarantee.html
Best Socks Ever (are Back)
I have been a huge fan of the PhD ultralight socks in the past but wrote a bad review on these socks about 3 years ago because the design was changed and the new ones were sliding off my heel. But Smartwool has listened to their customers and changed the PhD Ultralight socks back to the best socks EVER. I have tried many other brands but none are as good as Smartwool. So I gave the PhD's another try recently and they are again the perfect sock. They stay put and provide the best comfort and support. I also love that there is not a left and right sock (I hate that so many companies think that is a good idea). Left and Right socks are sooooo annoying. Please keep making these amazing socks and please never make left/right specific socks. SMARTWOOL is doing it RIGHT.
The Best Summer Time Workout Socks
I bought this three weeks ago mostly for road biking. I was under the impression that wool fabric was only for cold weather only and boy I was wrong. This socks are super thin, breathable, well ventilated and they do not retain heat in my feet while riding my bike or running. Hands down my "to go" socks for sports summer time.