Fabric: 100% polyester. Anti-microbial, anti-static, anti-odor and UPF 50 protection. Quick drying and breathable. Proven to absorb, wick and evaporate more moisture than cotton. Feature: Sideseamed. Double-needle topstitch on bottom hem and side vents. Clean-finished inside neck with self-fabric neck tape. Set-in sleeves with open hem. Two-button placket.