Polartec® Alpha™ is an innovative active insulation designed to adapt to changing conditions by effectively regulating heat and moisture. Originally developed for the US Special Forces to effortlessly handle the stop-go conditions of active combat, Polartec® Alpha™ is available in different lightweight compositions and can be worn as a direct, next-to-skin fabric. By keeping you warm when needed and releasing excess heat during high-exertion activities, it is ideal for outdoor activities.

Active insulation refers to the dynamic ability of Polartec® Alpha™ to seamlessly insulate the body to regulate heat management during high aerobic output levels while keeping you warm when less active.

Polartec® Alpha™ uses a lofted fiber structure with a mesh core, allowing warm air retention when needed and enhanced airflow during movement. This active thermal-management system prevents overheating and keeps you comfortable in unpredictable environments.

Unlike traditional insulation, which traps heat indiscriminately, Polartec® Alpha™ offers dynamic breathability, fast dry times and moisture-resistance. By actively adjusting and automatically responding to your activity level, it keeps you comfortably warm without the risk of overheating.

Polartec® Alpha™ active insulation can be worn for a much wider range of activities and conditions than traditional insulation technologies, such as fiber fill or down, which are best suited for static conditions. In fact, Polartec developed its active insulation technology for the US Special Forces to effortlessly handle the stop-go conditions of active combat. With its active air-exchange system that adjusts to temperature variations, the next-to-skin insulation technology excels when actively put to work.

Yes! The hydrophobic properties of Polartec® Alpha™ allow it to repel water and dry quickly. They also prevent moisture buildup, ensuring consistent insulation performance even in damp conditions.

Polartec® Alpha™ features an enhanced air-exchange system that is highly breathable. Furthermore, the continuous airflow efficiently manages heat and perspiration, preventing dampness and discomfort during intense activities.

Yes! Polartec® Alpha™ is lightweight and packable, making it very easy to pack without damaging its insulation properties. Offering exceptional warmth without the bulk, Polartec® Alpha™ is an excellent choice for on-the-go adventures or as that extra layer to put in your pack just in case it's needed.

Polartec® Alpha™ is expressly designed for high-performance durability. Its resilient structure maintains warmth and breathability over time, even with repeated use and compression.

Polartec® Alpha™ is perfect for adding an active insulation layer to jackets, mid-layers, and hybrid performance wear. It can also be worn directly next to the skin, and used by fashion brands for its aesthetic appeal. As a result Polartec® Alpha™ is ideal for outdoor sports, hiking, mountaineering, all-weather activities and within the latest fashion trends.

For best results, wash Polartec® Alpha™ in cold water with mild detergent and avoid fabric softeners to maintain its insulating and breathable properties. And be sure to follow the garment’s care instructions.

If you're interested in using Polartec® Alpha™ for your designs or collections, please fill out the form below and our team will contact you with more details. Looking for inspiration for your designs? Check out Products and our Made To Partner stories.