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.
Polartec® High Loft™ takes fleece comfort and thermal warmth to greater heights. By creating a patented high loft fiber structure, this material is ultra soft and highly compressible. Extended polyester yarns create large air pockets to retain more thermal warmth, while keeping this insulation lightweight. High Loft™ has the greatest warmth to weight ratio of all Polartec® fleece fabric technologies.
Polartec® Thermal Pro® is a fabric platform that embodies the versatile style applications of synthetic fleece. A diverse variety of knitting techniques create unique surface structures without sacrificing performance. The adapted look and feel still delivers the warmth and comfort of classic fleece.