Our most comfortable pair for days when the action is more spontaneous.

Not every day is a mountain epic but action is still the name of the game. Our new favorite pair of socks is always ready to keep pace with a merino wool/nylon blend for all-day comfort, odor resistance and a smooth, frictionless exterior. Targeted half-density cushioning and comfort compression reduce fatigue at work or play, while seamless toes reduce bulk whether sliding them into approach shoes, leather lace-ups or fully waterproof boots. Camo or mountain colorways reflect local style.

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58% Merino Wool, 39% Nylon, 3% LYCRA® Spandex

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Climate Neutral

We completely offset the footprint of each order through our commitment to being climate neutral. As part of our mission we value being good caretakers of the mountain life and protecting the places where we play.


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.

Trade-In Program

We believe a circular commerce system will design out waste and pollution, allowing for used clothing to be renewed and put back into use. Stio Second Turn™️ is our gear renewal program that allows customers to trade in and shop used apparel.

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Fabric Details
  • LYCRA® top to toe
  • Arch support
  • Reinforced foot bottom, high heel, heel & toe
  • Seamless toe closure
  • Flat knit leg
  • 1/2 density cushion in foot bottom, high heel, heel & toe
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