Saucony Men's Ridge Runner Jacket 40% Wool, 40% Polyester, 18% Nylon, 2% Other Fibers Imported Wool blend fabric and Technical details offer style and performance plus an extra soft interior lining for comfort Wool provides exceptional warmth and anti-microbial odor protection for natural insulation without compromising sweat wicking and breathability Front zipper helps you let off steam mid-stride Long, lean fit with enough room for layering, and extra back length to keep you warm, plus hidden elastic thumb loops to keep your sleeves in place Reflective trim along front zipper, at pockets, and at back hips keeps you visible