This golf jacket gives you extra warmth without packing on weight or bulk. How? We use hollow fibers that trap heat but with less weight than solid fibers. Rain also rolls right off, so you can wear it in any weather. UA Storm technology repels water without sacrificing breathability. Mid-weight knit fabric with an soft, brushed interior & a smooth, fast-drying exterior. 4-way stretch material moves better in every direction. Open hand pockets. Waist-shaping design for a more flattering fit. Uses a fluorine-free water repellent treatment. . . . . 88% Polyester/12% Elastane.