The Under Armour Women's HeatGear Armour Long Sleeve is a top-rated base layer top on Amazon. It features a gradient design that adds a stylish touch to your workout wardrobe. This top is made with HeatGear fabric, which keeps you cool and dry during intense workouts. It has moisture-wicking properties to keep you comfortable and focused. The long sleeves offer extra coverage and protection, while the fitted design allows for easy layering. With its excellent reviews and high ratings, this base layer top is a top choice for women looking for both style and performance.