Polar Jacket is made of a Polartec® Thermal Pro® fabric. It is one of the best insulators. It keeps you warm one-third better than wool. At the same time, it wicks the perspiration off the body. Thanks to the stretchy fabric and its ergonomic fit, you get more freedom of movement and maximum comfort. It is a great choice for cold fall and winter days as well as outdoor activities like off-road riding, sledding, hiking, hunting, fishing, skiing, or snowboarding. Recommended to use in combination with Quick Heater and Quick Dryer thermal underwear.