SAVVY FISHING SHIRT FOR FIGHTING HARSH SUN, HUMIDITY, AND HATCHES THAT BITE BACK. Simms' BugStopper® long-sleeve blocks sun, dries quick, wicks, and fights swarms thanks to advanced InsectShield® tech. A polyester-nylon blend with two zip-secure, fly-box compatible chest pockets. Articulated elbows enhance mobility. And a sunglass chamois inside the bottom hem keeps optics clear. Traditional fit comes standard.