Head circumference between 52-58 cm
The size of the sun hat is mainly based on the head circumference. The following are specific recommendations:
Universal size
Most sun hats are suitable for people with a head circumference between 52-58 cm, which is the most common size range.
Notes for small head circumference
If the head circumference is less than 50 cm, the hat may feel loose because this size is usually designed for children.
Notes for large head circumference
People with a head circumference of more than 60 cm may feel that the hat is tight, especially for styles such as baseball caps. It is recommended to choose a hat with an adjustable buckle design.
Speciality of the bucket hat
The bucket hat has a small adjustment range and is best worn by people with a head circumference between 54-56 cm.
The influence of brim size
The brim length is also an important factor in choosing a sun hat. It is recommended to choose a style with a brim greater than 11 cm to provide better sun protection.
To sum up, when choosing a sun hat, in addition to paying attention to the size of the head circumference, you should also consider the length of the brim and the adjustable design to ensure comfort and sun protection.

