The Under Armour Women's ColdGear Authentic Mock is a top-rated base layer top for women's tennis. It is made with Under Armour's ColdGear fabric that traps heat and wicks away sweat to keep you warm and dry. The compression fit provides a locked-in feel and supports your muscles for improved performance. The mock neck design offers extra coverage and protection against the elements. This base layer top also features anti-odor technology to keep you fresh during intense matches. With its high-quality construction and performance-enhancing features, it's no surprise that it is one of the most wished for women's tennis base layer tops on Amazon.