100% Polyester Imported Omni-shade: be safe and protected. Omni-shade blocks UVA and UVB rays to help prevent sunburns and long-term skin damage. The tight weave construction with UV absorbent yarns block the full spectrum of harmful UV rays. Signature logo: our signature Columbia logo is featured at the chest for subtle style. Comfortable fabric: 100% Polyester fabric is soft on the skin and allows for a comfortable fit. Versatile style: a three-button, collared neckline and short sleeves make this shirt versatile enough for everyday, casual wear. Advanced technology: Columbia men's utilizer polo features our signature UPF 30 fabric that helps to block harmful UVA and UVB rays as well as wicking technology to help keep you dry and cool on the trail.