UA Storm technology repels water without sacrificing breathability Lightweight, warm spacer fabric through sleeves, back & center for stretch & mobility where you need it Strategic woven overlays for wind protection with Armour Fleece lining for added warmth & comfort Generous 1⁄2 zip front makes for easy layering Ribbed elastic cuff detail helps keep sleeves in place through your swing Body: 91% Polyester/9% Elastane Woven Overlays: 87% Polyester/13% Elastane Fleece Lining: 100% Polyester.