Under Armour Storm Daytona Mens White Track JacketThis is the one layer you don't have to keep taking off and putting on all day. That's because it actually adapts to the temperature, keeping you warm when it's cool, but letting out extra heat as the day gets going. UA Storm technology repels water without sacrificing breathability Breathable insulation paired with lightweight, smooth spacer fabric for just the right amount of warmth Open hand pockets