Youâ??ve perfected your castâ??Columbia has perfected your polo. Designed with radial sleeves to prevent ride up and binding this shirt features Omni-Wick® Advanced Evaporation technology to keep things dry and comfortable. Omni-Shade® gives you UPF 30 sun protection. Rear shoulder vents enhance airflow. Contrast Columbia logo embroidered on right chest. Relaxed fit. Made of 100% polyester two-tone pique.