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Our breathable, quick-drying sun shirt with lightweight Helion™ UPF 50+ fabric, built for high-altitude waterways and sunny trails.

A must-have sun shirt for high-altitude waterways, sunny trails and alpine ridgelines, the Hylas Crew is the perfect choice for anytime shade is sparse. Providing versatile protection for boaters, anglers, climbers and everyone under the sun, this light, stretchy and quick-drying shirt features Helion™ breathable UPF 50+ fabric that shields against oppressive rays while providing low-bulk, easy-layering comfort.

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 Image Helion™
Helion™, 90% Nylon, 10% Elastane, 155 g/m2 with UPF 50+ Sun Protection

Breathable and quick-drying Helion™ fabric protects against high-altitude rays with UPF 50+ rating. Constructed with 90% nylon, 10% elastane, Helion™ offers lightweight, 4-way stretch ideal for activities on and off the water.

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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
  • UPF 50+ rating for excellent sun protection
  • Thumbholes for secure coverage
  • Flatlock seams maximize comfort and streamline design
Weight and Measurements
  • Weight: 6 oz.
  • Center Back Length: 24 1/8" (size S)
Other Details
  • Screenprinted Stio® and Pinecone logos for next-to-skin comfort
  • Imported
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How We Wear It