Our relaxed-fit Emerald Isle green Columbia Tamiami shirt is an Irish shirt with tropical flair. The flag of Ireland is the design of the orange, green and white art on the right left front of this short-sleeve green Irish shirt with mesh-lined back vents. You'll be comfortable even on long, steamy days, thanks to the moisture-wicking fabric that's also rated at UPF 40 sun protection. This is a button up shirt with a button-down collar and two front chest pockets. It's available in sizes small to XXL.