The Nike Women's Pro Warm Long Sleeve Training Top is another top-rated base layer top for women on Amazon. It features a gradient pattern that adds a trendy look to your workout wardrobe. This top is made with Nike's Pro Warm fabric, which provides excellent insulation and keeps you warm during cold weather workouts. It also has sweat-wicking properties to keep you dry and comfortable. The long sleeves offer extra coverage and protection, while the fitted design allows for easy layering. With its top ratings and positive customer reviews, this base layer top is a popular choice among women.