The Huk ICON X is one of the most popular fishing shirts available. When you wear this comfortable, perfect-fitting, sun-blocking +50 UPF crew you'll be wearing apparel that not only looks great, but is built from state-of-the-art fabrics, durable poly-knit construction and most advanced materials for protection against the elements. We proudly introduce our latest women's ICON X Quarter Zip long sleeve featuring our Internal Cooling Element (I.C.E) technology - engineered at the fiber level to cause an endothermic reaction once there is any contact with moisture (sweat) causing your body temperature to drop in minutes. Specs 100% Polyester