88% polyester, 12% elastane; smooth anti-pick, anti-pill fabric has a cleaner, snag-free finish; four-way stretch fabrication allows greater mobility in any direction; signature Moisture Transport System wicks sweat and dries fast; anti-odor technology prevents the growth of odor causing microbes; 30+ UPF protects your skin from the suns harmful rays; three-button placket; hemmed sleeves; performance loose fit; UA logo on left sleeve and back neck;