Built for comfort and performance on the water, the Simms Women&';s Bicomp Long-Sleeve Shirt is made with COR3 technology that wicks moisture, dries quickly, and provides you with UPF 30 sun-protection through long days on the river. The COR3 tech is made from a breathable polyester fabric to handle hotter days spent on the trail or by the water, and is finished with an anti-odor treatment to keep fishy smells at bay. Knit sides and sleeve panels further add to your comfort when you&';re tossing flies, and the sunglass chamois on the inside bottom hem keeps your shades clean after catching some errant spray from splashing fish.