The Nike Women's Pro Warm Long Sleeve Training Top is a popular choice for women's outdoor base layer tops. It is made from Nike's Pro Warm fabric, which provides excellent insulation and moisture-wicking properties. This base layer top offers a snug and supportive fit, with a crew neck design for extra coverage. It is perfect for cold-weather workouts or outdoor activities. The stylish design and range of colors make it a versatile and fashionable choice.