The Nike Dri-FIT ADV Club Cap has advanced sweat-wicking fabric to help you feel fresh all day long. Plus, it's super breathable for when the action heats up. Nike Dri-FIT ADV technology combines moisture-wicking fabric with advanced engineering and features to help you stay dry and comfortable. Smooth, lightweight fabric has plenty of stretch for the perfect fit and perforations on the crown and sweatband provide extra breathability. A hook-and-loop back strap lets you easily adjust the fit.