The Nike Women's Pro Warm Long Sleeve Top is a popular choice among women runners for a base layer top. It is designed with Nike Pro Warm fabric, which provides excellent insulation and moisture-wicking properties to keep you warm and dry during your runs. The long sleeve design offers extra coverage and protection against the elements, while the slim fit silhouette allows for easy layering. This base layer top also features flat seams to minimize chafing and a breathable mesh panel on the back for enhanced ventilation. Whether you're training in cold weather or competing in a race, this top will keep you comfortable and focused on your performance.