Darn Tough Mountaineering OTC Heavyweight Full Cushion Womens Socks

Size Chart

Some adventures require a little extra. Extra cushion. Extra protection. Extra warmth. On those days only Darn Tough's Mountaineering sock will do. Thick and padded throughout, this sock comes up high and has a reinforced heel and toe and ring toe construction for a comfortable invisible seam. Merino Wool means your feet will stay warm and dry all the way up the mountain, and back. And as always, Darn Tough backs up its tough promise with an unconditional lifetime guarantee.


  • Cushion: Heavyweight Full Cushion - Thick, burly, high-density cushion throughout the entire sock
  • Height: Over-the-Calf - Covers the calf, sits below the knee
  • Graduated Light Compression
  • Fine Gauge Knitting
  • Naturally Antimicrobial
  • Moisture Wicking
  • Regulates Temperature
  • Made in the USA
  • Lifetime Guarantee


72% Merino Wool, 26% Nylon, 2% Lycra Spandex

Sock Height

Knee-High Height Sock

Sock Cushion

Extra Heavy Cushion Sock

Customer Reviews

Based on 12 reviews
Mainer (Fairfield, Maine)
Inconsistent sizing

I find Darn Tough socks to be great, but sizing is inconsistent. I ordered 2 pair of hiking socks in size small (I wear a size 7 shoe) and they were way too small, so I sent them back for size medium, which fit perfectly. These mountaineering socks looked great for winter. The size medium that I ordered is way too large for me. It is frustrating to pay for return shipping. I am afraid to order more Darn Tough socks even though I would love another pair. I would suggest anyone right between sizes order the smaller size for these mountaineering socks.

Melissa Lawler

Darn Tough Mountaineering OTC Extra Cushion Womens Socks

Terry Chase (Queensbury, New York)
Warmest socks ever

My wife wears these horseback riding in the winter....feet have never gotten cold....even on the coldest days in upstate NY. This is her second pair and she's still wearing the first pair....darn tough!!

Joseph Antonaci (Sacramento, California)

Darn Tough Mountaineering OTC Extra Cushion Womens Socks

Rachel V. (Spanaway, Washington)
Best Socks EVER

These are the best socks I’ve ever owned. I have several pairs which I bought for a trip to Antarctica. They are expensive socks but I have lent pairs to a friend when we were in NYC in the winter and to my mom when we were in London in the winter. These can’t be beat. They are heavy socks, and they will keep your toes and calves warm. My mom loved my socks so much that I purchased this pair for her.