To the summit.

Shoulder your pack and head for faraway alpine ascents with Smartwool's Phd Outdoor Mountaineer Sock covering your ten irreplaceable toes. Rather than risking hot spots, blisters, or worse during your trip, trust the efficient blend of merino wool, nylon, and elastane fibers in the sock to wick moisture away from your feet as you sweat in cold conditions. Smartwool specifically shaped the low-profile leg portion of the sock to sit cleanly under mountaineering boots, while adding 20-30 mmHG of graduated compression throughout the sock to encourage healthy circulation.

  • Mountaineering-specific sock made for demanding ascents
  • Merino blend wicks moisture while insulating
  • Plush toe and heel areas add cushion to wear-prone areas
  • Graduated compression encourages circulation and recovery
  • Reviews
  • Q & A

Smartwool PhD Pro Socks

Learn more about the fit, features, and benefits of Smartwool PhD Pro Socks. #gofarfeelgood

Very good socks

  • Familiarity: I've used it several times

They are thin and compressive, be in the place all the time. Very confortable for all day use

Samrt socks

  • Familiarity: I've put it through the wringer

I really like the construction, material quality, and style of these socks. The added compression they have really makes them stand out to me.

Learn More: Smartwool PhD Socks

Learn more about the comfort, fit, and durability of Smartwool PhD performance socks. #gofarfeelgood

Best Ski Touring / Climbing Sock Ever

  • Familiarity: I've put it through the wringer

It should come as no surprise that a sock Smartwool designed with Conrad Anker would be the sock to end all socks for mountaineering. I'm a huge fan of darn tough socks, but these socks offer something Darn Tough hasn't hit yet, compression. The 20-30mmHg really does work keeping your toes warm. I've had frostbite and these manage to do the trick keeping them warm and wicking away the moisture. Blisters? Nope. I got them for ice climbing, but quickly noticed they work better than all my other ski socks for ski touring. I had one pair, now I own 3. They are holding up well to the abuse and I expect I will get several season out of them, no signs of wear halfway through the season. Get these socks.

Perfect socks

    Smart wool has quality socks

    great all-day touring socks

    • Familiarity: I've put it through the wringer

    Love these socks for my all day adventures in the backcountry. I have done several high-output (*sweat) days in these and have been extremely impressed. Not the sock you would want to wear multiple days in a row without washing, but perfect for a long day-adventure.

    Perfect Sock for Touring

    • Familiarity: I've used it once or twice and have initial impressions

    Ski touring can get blistery and sweaty. So far these socks fit awesome in my ski touring boot stays warm but wicks away sweat. Love the fit of these and the compression on my calves which are rather athletic!

    Comfortable and stay in place

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Medium

    These socks are very comfortable. At first I was a little worried that they were too tight, as they seem to have more compression than other ski/mountaineering socks I've worn (or maybe I have large calves for my size, ha). But after wearing them all day, I didn't notice them feeling too tight. They also stay put and are warm for their thickness (they are surprisingly thin, but still warm). They fit nicely (though snug) and appear to be very durable. I use them snowshoeing and for running outside in the winter. I really like the colors, too (bright orange/light blue).

    Unanswered Question

    Just got a pair of Smartwool PhD Outdoor Mountaineer lite cushion elite over the calf socks for Christmas.
    I was wondering about how warm they are for Alpine skiing and other all day activities outside in the cold and snow? Is it necessary to double up with a 2nd sock?
    Love the compression quality and the snug fit but concerned about warmth.

    Very nice

      I like these. The bottom has extra padding but the rest is fairly thin which I like. It fits very snug and doesn't slip nearly as much as most ski socks. The compression is noticeable. I think these are a better sock than the stance ski socks, more compression, don't wear out, but the selection isn't comparable and they cost a lot more. I'd definitely buy more if they were on sale.

      Overpriced, but good compression

      • Familiarity: I've put it through the wringer
      • Fit: True to size

      I'm a SmartWool fan. Unfortunately, I didn't see any extra benefit from the PhD line. For the price, I think you will find better value in other wool-blend socks out in the market. I wear size 10.5 shoe, and LARGE sock size fits well.

      An extra benefit of this sock is the compression component. If you're doing a lot of standing/hiking, the calf compression of the sock does make a difference. Hence, 4/5 stars instead of 3/5.