Polar fleece Soft napped insulating fabric made from a type of polyester called polyethylene terephthalate (PET) or other synthetic fibers. Other names for this fabric are "Polar Wool," "Vega Wool," or "Velo Wools." Despite names suggesting the product is made of natural material, polar fleece is 100% polyethylene terephthalate. It is used in jackets, hats, sweaters, sweatpants, cloth nappies, gym clothes, hoodies, inexpensive throw blankets, and high-performance outdoor clothing. |