Product Overview: Oakley Men's Bark Trucker Cap Features: Features The Silicon Bark Trucker 4.0 Hat provides golfers with important performance features that help them cope with hot, sunny conditions on the course. A moisture-wicking sweatband, eyelet venting and a stretch mesh back on this mid-crown golf hat help you stay cool and dry when the competition heats up. A curved brim helps reduce the harmful and distracting effects of the sun, while sonic welded Oakley logos provide modern style.