Nike Dri-FIT ADV technology combines moisture-wicking fabric with advanced engineering and features to help you stay dry and comfortable. Engineered knit at the front panel feels breathable. Heathered fabric along the collar, sleeves and back has a smooth feel. Perforations at the back of the neck add extra ventilation. Standard fit for a relaxed, easy feel Let our Engineered Vapor Polo help keep you cool, focused and comfortable through your swing. We made this one with fabric from some of our favorite running and training gear, adding a breathable front and smooth feel, so you stay fresh as you stare down the course.