The men's Storm Evolution Daytona sweatshirt is the only layer that you don't have to take off all day. This is because it actually adapts to the surrounding climate, keeping you warm when it's cold, but at the same time allowing excess heat to drain. All this with an anti-wet UA Storm coating. UA Storm technology repels water without compromising breathability breathable insulation in the sleeves, back and sides with lightweight spacer fabric and woven overlay on the front for wind protection Unique hybrid construction keeps you warm without losing breathability Practical front 1 zipper for easier dressing/undressing