The Under Armour Women’s ColdGear Crew 4.0 Base Layer Shirt is built for extreme weather and lower activity. This long sleeve shirt utilizes a soft, brushed grid interior that traps in your body heat without adding bulk and features UA Scent Control Technology to control body odor. The 4-way stretch construction allows for better mobility in every direction and the material wicks away sweat and dries fast. This crewneck shirt works like a long underwear layer that has been revamped for today’s athletes.