Our Pro Series™ shirts give you the freedom to move without ever losing that crisp, clean look. Breathable, durable and packed with technical features, they can handle anything you put them through. Pro Series Dayne Classic Fit Shirt Product Features : Greater Arm Mobility™ helps extend arm and shoulder range-of-motion so you can move freelyMoisture Movement Technology™ helps wick moisture away from the skin to keep you dry and comfortableSun Protection Fabric™ helps block harmful UV rays, keeping you covered and comfortable during long days outdoors, Breathable mesh yoke enhances airflow to help keep you cool and comfortable Men's Pro Series Dayne Classic Fit Shirt in True Blue, Size: XS by Ariat