For those who prioritize performance, the Under Armour Women's ColdGear Armour Mock Neck Waffle Base Layer Top is a top choice. This top is made with Under Armour's ColdGear technology, which traps heat and wicks away sweat to keep you warm and dry during intense workouts or outdoor activities. The mock neck design provides extra coverage and protection against the cold. With its waffle knit texture and sleek fit, this base layer top combines style and functionality.