The Under Armour Women's ColdGear Authentic Mock Neck Compression Shirt is a neon base layer top that is perfect for cold weather activities. It is made of a dual-layer fabric that provides a warm and comfortable fit. The compression fit supports your muscles and reduces fatigue during workouts. The mock neck design offers extra coverage and protection against the elements. The shirt also features moisture-wicking properties to keep you dry and sweat-free. With its vibrant neon color and performance-enhancing features, this top is a must-have for any active woman.