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Darn Tough Mountaineering OTC Extra Cushion Sock - Men's


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When other hikers start turning back, you keep going strong in comfort with the help of the Darn Tough Mountaineering Over-The-Calf Extra Cushion Sock. This sock features a heavyweight merino wool blend and thick cushioning to help you laugh in the face of icy winds, sideways sleet, and treacherous terrain.

Unlike other socks built for extreme weather, this one features Darn Tough's streamlined performance fit so it still fits comfortably in your boot. Merino wool regulates temperature to maintain comfort from the trailhead to the peak, nylon adds durability, and Lycra maintains stretch and recovery so the fit doesn't fade over time. This sock also features Darn Tough's thickest, highest-density cushioning to ease impacts from rugged terrain and ease the burden of fully-loaded packs.

  • Heavyweight wool sock for the coldest, wettest conditions
  • Merino wool naturally regulates temperature and resists odor
  • Nylon and Lycra added for durability and stretch
  • Extra cushion for rugged terrain and heavy packs
  • Performance fit for no slipping, bunching, or blisters
  • Proudly made in Vermont, USA
  • Item #DRN008C

74% merino wool, 24% nylon, 2% Lycra
Recommended Use
backpacking, mountaineering
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 3

Declining quality

I've used it several times
True to size
Size Bought
5` 10"
163 lbs

My second pair of Darn Tough OTC Mountaineering socks and the quality has declined dramatically. The first pair has a much thicker foot sole which is entirely red. These are red on the toe and heel and are so thin that it affects boot sizing. My first pair weighs 175 grams after many washings. The new pair weighs only 160 grams after the first wash.

>Rating: 4

Nice socks

I've put it through the wringer

Good socks but I prefer Smartwool after tried both.

>Rating: 5

So Warm

I've put it through the wringer

These Darn Tough Mountaineering socks are insanely warm and thick. They also come all the way up to just about the knee. Great with any boot, and they provide extreme comfort as well. I love these for the winter months, and they also run very true to size. Lastly, I would also like to give them a go in the crew height: https://www.backcountry.com/darn-tough-mountaineering-extra-cushion-micro-crew-socks-mens?rr=t

>Rating: 5

Long and Warm

I've used it several times

Used these at the USMC Mountain Warfare Training Center. They perform wonderful in single digit to 50 degree temps. The long length ensures they don't fall down. Nice and thick with good cushioning. As with all Darn Tough socks they will wear quite well when compared to other brands IMH experience.

>Rating: 5

Quality sock

I've used it several times

Needed some thick socks for snowboarding since my feet are super skinny. These fill in my boots nicely and seem like they will last a long time with heavy use.

>Rating: 5

Excellent Large Sock

I've used it several times

Darn Tough Socks are the only sock that I have found to fit my size 18 foot (XXL size) without feeling like my toes are compressed or that I am stretching the sock out every time I wear them. This "over the calf" sock is really that tall. Even with my 38" inseam these socks come up to the base of my knee. So far so good as far as wear goes, while I haven't had them for very long the quality is top notch and even if I do wear them out with the lifetime warranty I will only have to buy the socks once.