Head circumference 22u0026#34;-24u0026#34;, brim 5.5u0026#34;nHigh quality material sweat-absorbent function,Quick DryingnThe hat is adjustable,adjustable buckle,360 degree rotatingnThe adjustable shield can be worn up as a visor to protect your face and eyes when the sun is overhead or pulled down to cover your entire face if you are looking into the sun.nSuitable for outdoor use while swimming and walking in sunny hot days to protect your face and neck wellnSun hats are a perfect summer accessory