Polartec® Power Air™ is the first fabric technology engineered to reduce fiber shedding - minimizing microplastics released into the environment. By encapsulating the lofted fibers within each layer, this new fabric offers advanced thermal efficiency that sheds five times less than other premium 'mid-layer' weight fabrics. Polartec® Power Air™ has a similar warmth rating to traditional 200 weight Polartec® fleece.