Darn Tough - Mountaineering OTC Extra Cushion Sock

Darn Tough - Mountaineering OTC Extra Cushion Sock

Availability: In stock

Stock #: B4TS-

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Made for hearty souls who laugh at sub-zero wind chills. Sleet, freezing rain, snow? Keep it coming'. While the other "extreme weather" socks feel more like Moon Boots, Darn Toughs have a streamlined performance fit that keeps up with you when the trail gets rough.


  • 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 odor.
  • Guaranteed For Life: No strings. No conditions. For life.
  • Merino Wool: The ultimate fiber 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.
  • 74% Merino Wool, 24% Nylon, 2% Lycra® Spandex

Additional Information

Intended Use Mountaineering & Ice Climbing
Material Wool
Properties Insulating, Quick Drying, Wicking, Anti-Odor