sun hat
US /ˈsʌn ˌhæt/
UK /ˈsʌn ˌhæt/

1.
a hat with a wide brim that provides protection from the sun
:
•
She wore a large sun hat to protect her face from the strong rays.
•
Don't forget your sun hat when you go to the beach.
a hat with a wide brim that provides protection from the sun