bucket hat
US /ˈbʌk.ɪt ˌhæt/
UK /ˈbʌk.ɪt ˌhæt/

1.
a soft hat with a narrow, sloping brim all the way around, typically made of cotton or canvas
:
•
He wore a denim bucket hat to protect himself from the sun.
•
The fashion trend of the 90s saw a resurgence of the bucket hat.