The Tilley Airflo provides sun protection in a lighterweight construction. Tilley Airflo designs incorporate mesh into the crown allowing coolness and comfort during hot days or strenuous activities. Engineered from Tilley Nylamtium, a strong water-and-mildew resistant form of nylon. The LTM6 is the Airflo version of our LT6 Hat, and has a broader brim and a taller crown than all the other Tilley.