Polartec's New "Alpha" Synthetic Insulation

Polartec, in response to requests from US Army Special Operations Forces (SOF), has created a new, highly breathable synthetic insulation fabric called "Alpha." The need for a synthetic insulation that would maintain the benefits insulated garments provide, without the so-called "vapor barrier" created by the tightly woven exterior fabrics used to encase high loft insulators, led to the emergence Alpha. 

The value of breathable fabrics during rigorous activity is that they allow for a cooling airflow to balance increased body heat and sweat output that occurs during activity, while maintaining wind and moisture protection. According to the company, "Polartec Alpha provides active warmth that allows air exchange for breathability and comfort in more dynamic situations."

A number of well-known outfitters have already adopted Alpha, including Eddie Bauer, Marmot, Montane, Rab, and The North Face.

Read more: Polartec Introduces Polartec Alpha and Redefines Synthetic Insulation