UA Storm technology repels water without compromising breathability. The new, lighter knit fabric is ultra-comfortable and lightly brushed to provide just the right amount of warmth. 4-Way Stretch technology allows free movement in every direction. UPF 50+ protects the skin from the sun's harmful rays. The 1/4 zip allows for easy layering. Edging details on the collar. Water-repellent treatment without fluorine.