【Adjustable Size】 Head circumference: Approximately 55-60cm, brim length: Approximately 7.5cm, depth: Approximately 12cm. The adjustable belt at the back of the cap is made of elastic rubber, allowing you to adjust it to your preferred size! Suitable for a wide range of people, regardless of age or gender. 【UV Protection】 The long brim of the men's cap withstands strong sunlight, effectively blocks UV rays, and protects your eyes without obstructing your vision. It considers the balance between UV protection and clear vision. It also functions well as a sports visor. Of course, it can be used not only in summer but throughout the year. 【Mesh Ventilation Structure】 The entire men's cap uses a mesh material with excellent breathability and quick-drying properties, providing outstanding ventilation. It allows air to pass through well and easily releases heat that tends to accumulate inside the hat, making it ideal for sun protection in the humid Japanese summer! An essential item for heatstroke and UV protection in the coming season when the sun gets stronger!! 【Ultra-Lightweight & Sweat-Absorbent, Quick-Drying】 The lightweight mesh design makes the hat even lighter to wear, and you won't feel restricted even after wearing it for a long time. The inside of the cap uses a material with high sweat absorption, quickly absorbing and releasing sweat. Even if you sweat in the summer heat or during sports, you can maintain a comfortable, dry state. It is lightweight, well-ventilated, sweat-absorbent, and quick-drying, providing a refreshing feel and preventing stuffiness, making it comfortable to use for extended periods. 【Face-Slimming Effect & Versatile Use】 This cap combines practicality and fashion. It's easy to wear with everyday outfits. It's an indispensable item for the sunny season, commuting by bicycle, driving, indoor and outdoor exercise, mountain climbing, fishing, travel, and more. It also has a face-slimming and style-enhancing effect, so it can be used by men and women alike. It will be a great help in the coming season.