Darn Tough Womens Mountaineering Over-the-Calf Heavyweight Hiking Socks


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Sleet, freezing rain, sub-zero wind chills, snow? Yes, please. Darn Tough's Mountaineering Over-the-Calf Heavyweight hiking sock is thick and burly with extra cushion and protection exactly where you need it. Merino wool wicks away moisture and keeps feet warm and dry. And as always, Darn Tough backs up its tough promise with an unconditional lifetime guarantee.


  • Cushion: extra heavy
  • Weight: heavyweight
  • Height: knee-high
  • Fine gauge knitting for durability
  • Merino wool regulates temperature
  • Fast action wicking pulls moisture away from skin
  • Made in the USA
  • Lifetime guarantee


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

Sock Height

Knee High Sock

Sock Cushion

Extra Heavy Cushion Sock

Customer Reviews

Based on 20 reviews
M. (Fairfield, ME)
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.

T.C. (Queensbury, NY)
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!!

The BEST winter socks.

My feet are always cold in the winter. I suppose it’s from a combination of childhood frostbites while doing winter chores on the farm and raynauds since I’ve aged a bit ... but I know a good sock when I wear it. And this is a GOOD winter sock. The best, in my book. Warm without sweating. Perfect for cold Minnesota winters!
I’ve bought multiple pair as gifts for my northern friends and family. What other gift is guaranteed for life, looks nice, and especially, FEELS nice? Highly recommend.

r.v. (Spanaway, WA)
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.

Wonderful pair of socks

I just discovered Darn Tough socks and love them. They are very well made, are very comfortable and don't leave marks. I don't sweat in them. They fit perfectly.