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Trail sock comfort is key when logging high miles at high elevation.

We’ve learned not to underestimate the power of a comfortable hiking sock when logging high miles or high traverses at high elevation. Our fresh take on the classic pair starts with a merino wool/nylon blend for thermally regulated comfort then adds smooth, seamless toe construction, a cushioned footbed and comfort compression to reduce fatigue. Reinforced construction ensures they outlast long loops, extended thru-hikes and life-list foreign circuits.

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Let The Outside In® Stripe

63% Merino Wool, 34% Nylon, 3% LYCRA® Spandex

Pinecone Stripe

62% Merino Wool, 35% 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
  • Flat knit leg and top of foot
  • Arch support
  • Reinforced foot bottom, high heel, heel & toe
  • Seamless toe closure
  • Full cushion at foot bottom, high heel, heel & toe
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