Smartwool PhD Outdoor Heavy OTC Socks


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Thick socks for lots of cushion and warmth in the winter, the Smartwool PhD Outdoor Heavy OTC Socks will keep your feet happy as you trudge through the woods shouldering a hunting rifle, snowshoe through deep snow to reach a rocky summit or sleep the night away in your winter bag inside a frosty tent. OTC stands for Over-The-Calf, and "Heavy” cushioning means the cushy padding underfoot will absorb shock and insulate. Merino wool regulates moisture and stink while the 4 Degree Elite Fit System keeps them from bunching or slipping inside your boots.


  • Fabric: 85% merino wool, 14% nylon, 1% elastane
  • 4 Degree Elite Fit System uses two elastics for greater stretch and recovery to keep the sock in place; ankle band, upper instep band, lower instep band, arch band
  • ReliaWool Technology in high impact areas provides longer lasting protection; more durable than normal wool
  • Strategic mesh zones for maximum ventilation
  • Flat knit durable toe seam
  • 1x1 ribbed welt, 1x1 ribbed leg
  • 14-inches overall height
  • Height: Over-the-calf
  • Cushioning: Heavy Full Cushion

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Review Summary

5 out of 5

2 Reviews

  • Performance: 2
  • Lasts forever: 1

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5

2 Ratings & Reviews

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
from seattle, WA
25-34 yrs

very good
December 11, 2012

this is my second pair of heavy weight socks and I like these socks. they are very warm and have extra cushion. I wear them in my hiking boots the last few weeks or so to keep my feet warm in the cold since its raining and windy in seattle now.

Pros: Lasts forever, Performance
Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5

love smartwool
December 24, 2012

very warm winter socks. Smartwool is always a good choice. I have smartwool phd ski socks also. Both are of great quality with great cushion and support.

Pros: Performance

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Smartwool PhD Outdoor Heavy OTC Socks Photo

Black and Graphite.

Available sizes, while supplies last, include size small, size medium, size large and size extra large: s, m, l, xl.

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