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Darn Tough

Darn Tough Mountaineering OTC Extra Cushion

2 reviews   |  

If you’re out there in the cold, you need the Darn Tough Mountaineering OTC Extra Cushion sock with you. Offering a streamlined performance fit and packed full of Merino Wool warmth, these socks keep you moving forward when the rigours of the mountain get you down. Extra Cushion provides DT's thickest, burliest and highest density cushioning, making for super comfy sock! 

Darn Tough are an American company specialising in outdoor sports socks, primarily manufactured from ethically sourced Merino wool. Their socks are entirely constructed within their Northfield, Vermont factory and are renowned for being the hardest wearing outdoor socks on the market. As well as the near legendary durability, Darn Tough Socks provide amazing levels of comfort in all weathers and feature a specifically designed performance fit. Darn tough are so confident you'll love their socks they provide a money back guarantee if they aren't the best all-round socks you've ever owned!


  • Performance Fit: No slipping, no bunching, and no blisters.
  • Fine Gauge Knitting: Unprecedented durability and our unique “put it on, forget it’s on” feel.
  • Fast Action Wicking: Pulls moisture away from skin. Fast drying.
  • All Weather Performance: Cool in the summer, warm in the winter.
  • Naturally Antimicrobial: Repels bacteria and odour.
  • Merino Wool: The ultimate fibre for breathability and comfort in all conditions.


  • Extra Cushion: Our thickest, burliest and highest density cushioning makes for a big, bad monster of a sock.
    Over the Calf Height: The name says it all. The ultimate height for keeping the outside—out.


  • 73% Merino Wool 25% Nylon 2% Lycra® Spandex

Sizing (UK)

  • S/5-7 - M/7.5-9 - L/9.5-11 - XL/12-14 - XXL/14-16
    Customer Reviews
    5.0 Based on 2 reviews
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    • B2 boots
    • altitude use
    • couple
    • advice
    • socks
    • times
    • trip
    Jan P.
    United Kingdom United Kingdom

    Feels awesome

    Love it. Tough and exactly as advice.

    terence g.
    United Kingdom United Kingdom

    by far the most comfortable socks I've ever worn

    I bought these for winter and high altitude use. I've only managed to use them a couple of times in my B2 boots, but so far I can say they are the most comfortable socks I've ever worn. I managed a couple of days wear without washing them and they stayed soft and odour free. I reckon 4 or 5 days on an extended trip would be possible before they needed washing.


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