The Patagonia Men's Short Sleeve Island Hopper Shirt works like a breath of cool, fresh air in a tropical steam bath. Its ultralight blend of moisture wicking all recycled polyester and organic cotton provides big time ventilation and UPF 15 rated sun protection. It also washes easily with a quick dunk in the sink and dries quickly. Light colored fabric reflects the sun's rays and a straight hem and side vents make for casual, untucked comfort. The oversized drop in chest pockets sized for a fly box, passport or both with mesh vents can be accessed through the vertical reach through opening while keeping the top flap secured.