Columbia Super Low Drag Long Sleeve Shirt 100.0% Polyester Imported Omni-Wick technology Omni-Shade UPF 40 sun protection Antimicrobial treatment protects this product from bacterial growth Quick drying. Vented. Rod holder Omni-Wick Moisture Management Omni-Shade UPF 40 Sun Protection Trement Protects This Product From Bacterial Growth Vented in Back