Standard size: 7 1/4 about58cm
There is a adjutablebelt behind the back of the hat.It can adjust the size
Suggested use of the crowd:Head circumference 56-60CM
minimum value ofHead circumference:53CM
Maximum valueofHead circumference:61cm
Brim:about7.5cm
thelength offabric :about16CM
The depth of the hat:about11cm
NOTE:Size may have slight difference because of measure by hand