The Nike Women's Pro Warm Long Sleeve Training Top is a popular choice for women's outdoor base layer tops on Amazon's most wished for list. This top is made from a blend of polyester and spandex, offering excellent stretch, warmth, and moisture-wicking properties. The Pro Warm fabric provides insulation and traps heat to keep you warm during outdoor activities. It features a crew neck design for a comfortable fit and extra coverage. The flat seams minimize irritation and chafing. Whether you're running, training, or participating in outdoor sports, this base layer top offers both style and functionality.