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. hen you're out over the water staying cool and dry is paramount. An adjustable button up with vented back add breathable comfort in this angler inspired short sleeve. Columbia’s attention to detail is what sets our apparel apart from others. We use only the highest quality materials, expert craftsmanship, and durable stitching. This is a long-lasting shirt you will enjoy for seasons to come.