Breathable active insulation for fast-forward activity and internal climate control.

Matched to constant training—for trips, tours or ultras—our breathable active insulator is light, fast and technical. Polartec® Alpha® Active 60g insulation cuts a cold-morning chill yet breathes deeply and keeps the interior dry during high-output activity. The stretch gusseted underarm enables free-ranging mobility, while sleek construction detailing gives it a superfast feel on the trail or on the skintrack. A quick-draw hood cinches down fast when storms descend and a ripstop shell sheds light weather with a lasting DWR finish. Key pockets stow critical items.

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Polartec Alpha



Meridian™ AP Stretch Mini-Ripstop, 100% Nylon, 20 denier, 49 g/m2 with DWR Finish

Meridian™ AP is a 20 denier Mini-Ripstop Nylon with mechanical stretch by construction. A DWR finish makes this fabric both highly water resistant and extremely breathable while maintaining excellent wind resistance.


Polartec® Alpha® Active Insulation, 54% Recycled Polyester, 46% Polyester, 60g/m2

Alpha® is a 100% polyester knit active insulation that eliminates the need to shed layers while on the move. Designed to regulate core body temp during dynamic and static activities, Alpha® technology keeps moisture vapor moving freely through the fabric, increasing the overall air exchange and speeding up dry times. A DWR coating provides water resistance, increasing this fabric's performance in the most challenging environments.

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In our commitment to being good stewards of the mountain life and protecting the places we play, each order has been completely carbon offset by stewardship initiatives.


Over 50% of our products are made with recycled or preferred material.

Stio Second Turn™

In our commitment to stewardship, this program is an important step in reducing our footprint by recycling and restoring apparel to new again.

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  • Lightweight, packable insulated mid-layer
  • Adjustable low profile hood with structured hood brim for customized fit
  • Gusseted underarms without insulation for mobility and breathability
  • Stretch woven cuff for comfort and performance fit
  • YKK® Vislon® front zipper
  • Chest and hand pockets with hidden zippers
  • Stio custom zipper pulls
  • Slight drop hem with dual hem adjust
  • Reflective Stio® and pinecone logos for visibility
  • Weight: 11 oz
  • Imported
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