Classic board shorts efficiently pull moisture away from his skin and promote rapid evaporation as the day heats up. Our UPF 50 sun protection wards off UV rays, while an easy stretch lets him move in comfort... Omni-Wick. Omni-Shade UPF 50 sun protection. Comfort stretch. Elastic at waist. Hand pockets. 100% Polyester. Machine wash. Imported. Columbia Boys' Sandy Shores Board Shorts - Size L.