This 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.
DNA
UA Storm technology repels water without sacrificing breathability
Durable stretch-woven front fabric with soft fleece lining keeps you warm without excess bulk or weight
Lightweight, warm spacer fabric through side & back for stretch & mobility where you need it