"Long days in strong sun call for UPF 50+ protection, and the Roark UPF Expedition Short-Sleeve Shirt delivers it from land to water. This T-shirt wears as a rashguard in the water and as a sun layer on land. Recycled polyester and lyocell make up most of the fabric, and a touch of spandex adds stretch. What Our Gearhead® Experts Are Saying:""After swimming, I kept the shirt on while it dried. The fabric pulls moisture off the skin and dries quickly, so it worked as my only layer from the water to the walk back."""