The Under Armour Women's HeatGear Armour Long Sleeve Shirt is a neon base layer top that is perfect for workouts or outdoor activities. It is made of a lightweight and breathable fabric that wicks away sweat to keep you dry and comfortable. The long sleeves provide extra coverage and protection against the sun's harmful rays. The shirt features a mock neck design for added style and a snug fit. It also has flatlock seams that reduce chafing and irritation. With its vibrant neon color and performance-enhancing features, this top is a great addition to any active woman's wardrobe.