Smooth, anti-pick, anti-pill fabric for a more comfortable, snag-free finish. 4-Way Stretch construction improves range of motion and dries faster. Signature Moisture Transport System wicks sweat away from the body. Anti-Odor technology prevents the growth of odor-causing microbes. 30+ UPF protects your skin from the sun's harmful rays. Durable 3-button placket. Body: 5.6 oz. Polyester/Elastane. Collar: Polyester.