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Ultra training on the weekend, after work lap on the valley trail or Wednesday night beer run, this running sock is designed to keep pace with whatever the intensity of your run.

Merino wool/nylon blend warms and dries, while naturally resisting odor during high-mileage days. Seamless toes minimize friction whether inside a zero-drop or double-thick-midsole shoe. Comfort compression and cushioned footbed reduce fatigue when pounding out uphills or burning up descents.

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56% Merino Wool, 41% Nylon, 3% LYCRA® Spandex

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As caretakers of the mountain life, we recognize our responsibility to support organizations and people who share our vision to drive positive change for people and the planet. We’re proud to partner with some tremendous organizations in their missions to responsibly advance outdoor recreation and protect our wild surroundings.


We are committed to building garments that are durable, timeless and continue to perform season after season. Over 50% of our product line incorporates preferred materials, which include organic cotton, recycled materials and responsibly-sourced down. We are committed to growing our preferred materials usage to 75% by 2025 and to completely eliminating PFAS from our garments by 2025.

Stio Second Turn®

Our apparel is built to last. As a part of our efforts to reduce waste and keep more gear in the mountains where it belongs, our home-grown gear renewal program allows previously-used items to be traded in, cleaned, repaired and circulated back into use.

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Fabric Details
  • Merino wool and nylon blend offers natural odor resistance
  • Flat knit top of foot
  • Arch support
  • Reinforced foot bottom, high heel, heel, and toe
  • Seamless toe closure
  • 1/2 density cushion in foot bottom, high heel, heel and toe
  • 2.2 oz.
Other Details
  • Made in the USA with imported and domestic components
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