The Under Armour Women's ColdGear Authentic Mock is a top choice for women's running base layer. Made with ColdGear fabric, it provides excellent warmth and moisture-wicking properties to keep you dry and comfortable during your runs. The mock neck design offers extra coverage and protection against the cold, while the fitted silhouette ensures a snug and supportive fit. This base layer top is also equipped with anti-odor technology to prevent the growth of odor-causing microbes. Whether you're running in cold weather or layering up for outdoor activities, this top is a reliable choice for women's running base layer.