95% polyester, 5% elastane; smooth, soft anti-pick, anti-pill fabric has a cleaner, snag-free finish; four-way stretch fabrication allows greater mobility in any direction; anti-odor technology prevents the growth of odor causing microbes; 30+ UPF protects your skin from the suns harmful rays; durable rib-knit collar; three-button placket; hemmed sleeves; athletic loose fit; UA logo on left sleeve;