Alpha Hero Hex 1200X1200
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Active Insulation

Polartec® Alpha® was invented for the U.S. special forces.

They required a superior insulation system for extreme temperature variations and the start-stop conditions of combat. Alpha® active insulation is engineered for consistent warmth, while allowing greater breathability during activity. This air exchange technology creates sustained comfort without shedding layers, which isn’t an option during a mission.

Regulate Comfort in Changing Conditions.

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Alpha® Features & Benefits







Available in 100% Recycled P.E.T. Plastic

Available in 100% Recycled P.E.T. Plastic

Available in at least 50% Recycled P.E.T. Plastic

Available in at least 50% Recycled P.E.T. Plastic

Polartec Alpha Fabric

Polartec® Alpha®

About Alpha® Technology

Polartec® Alpha® active insulation continuously releases excess body heat before it builds to cause saturation and discomfort.

This patented, adaptive quality is made possible through Alpha’s lofted fibers connected to a solid mesh core. And since Polartec® Alpha® is inherently hydrophobic, it resists all moisture and dries incredibly fast.

Technology Alpha 2020X1110
Alpha® Q&A
Active Insulation refers to Polartec® Alpha®'s ability to seamlessly insulate the user at high aerobic output levels as well as when less active.
Active Insulation can be worn in a much wider range of activities and conditions than more traditional insulations, like fiber fill or down, which are best suited for static conditions.
Request a swatch of any of our fabrics by <a href="/contact-us">contacting a member of our sales team</a>.
Garments made with Polartec® Alpha® fabric can be found in our <a href="/partners/marketplace">Partner Marketplace</a> or by <a href="/partners/where-to-buy-garments-made-with-polartec">shopping at e-commerce retailers</a>.

Featured Media

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Dynafit & Polartec

The laws of warmth and motion must be respected during the most challenging ski mountaineering race in the Italian Alps, Trofeo Mezzalama. Dynafit and Polartec collaborated to create performance apparel that keeps athletes comfortable and safe despite extremes.

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Shop Polartec® Alpha®

Find garments made with Alpha® and other Polartec® fabrics from these retailers

Backcountry sells outdoor gear and apparel.

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Moosejaw curates and sells all things outdoors.

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High-quality climbing and mountaineering products.

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Competitive Cyclist

Devoted to delivering a premium bike shop experience.

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Evo explores the collaborations between culture and sport.

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Steep and Cheap

Deep discounts on outdoor gear & apparel.

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Featured Fabric: Alpha

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2023 Polartec Apex Award Winners Announced

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2022 Polartec Apex Award Winners Announced

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