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Polartec®Alpha®is the original active insulation, invented to offer both superior breathability and dependable warmth during all start-stop activities. Resilient lofted fibers connected to a durable mesh core provide versatile performance in all conditions and environments
Polartec Alpha and Alpha Direct active insulation are advanced insulation materials which regulate body temperature during periods of physical exertion and rest.
Alpha limits the cold air that enters the garment while continuously moving excess heat away before it builds to cause saturation and discomfort. This latest advancement in adaptable breathability helps eliminate the need of shedding or adding layers while on the move.
Alpha is hydrophobic and fast drying, it won't absorb moisture even if you start to sweat.
The more you move, the harder Alpha works to regulate temperature and keep you comfortable.
Alpha is extremely lightweight, and compressible making it ideal for packability.