Flammi UPF 50+ Fishing Hat Mesh Boonie Head Neck Face Flap Sun Hat UV Sun Protective Nylon fishing flap hat, featured with breathable mesh around crown and mesh mask for ventilation UV protection sun hat protect your head face ears neck skin from strong sunlight Removable mesh face mask and flaps give you fashion and variable wear style. Adjustable neck strap keep hat stay on in wind Sun block hat is suitable for fishing, traveling, hunting, gardening, farming, camping ,hiking etc. Fits about 22"-23" head circumference; Width of hat brim - about 3.3"; Flap length - about 10.4" (side), about 8.5" (back)