Under Armour® UA BaseTM 2.0 Base Layers are built for comfort during cold weather and higher activity. They're moisture wicking and fast drying to keep you light and comfortable. They significantly reduce odor-causing bacteria to limit your scent. But paramount to their design is a soft grid interior that holds your body heat to keep you warm. All in a fitted style with 4-way stretch so they fit easily under your gear and move as you do. Wear for hunting, athletics, or winter exploring.