The Under Armour Women's ColdGear Armour Compression Mock is a top-selling gradient base layer top on Amazon. It is designed to keep you warm and comfortable during cold weather activities. The compression fit provides a snug and supportive feel, while the ColdGear fabric traps heat and wicks away sweat to keep you dry. The mock neck design offers extra coverage and protection against the elements. This top is perfect for layering under your favorite winter gear or wearing on its own during outdoor workouts. Available in a variety of colors, it is a versatile and stylish choice for any active woman.