Columbia Men's Cast Away Zero Knit Long Sleeve Shirt 100% Polyester Omni-Freeze Zero sweat-activated super coolingVented Omni-Wick100% Polyester Omni Shade UPF 50 sun protectionMachine wash separately in cold on gentle Antimicrobial treatment protects against bacterial growthTumble dry low, remove promptly Center back length: 30 inchesLow iron if needed