Provides sun protection in a lighter weight construction. TilleyAirflo®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. It has a semi-sloping front and back brim and a relatively high crown. Brim Measurements: Front: 2 5/8" Back: 2 3/4" Sides: 2 1/8"