This empty top hat is made of polyester fabric, lightweight and stylish. Hollow top design, not stuffy or affecting hairstyle. The back of the hat has an adjustable buckle strap, which is suitable for most head circumference and comfortable to wear without pulling or falling off. The inner sweat band can effectively prevent sweat beads from slipping off. The brim of the hat is designed with a curved brim, which does not block the line of sight, embellishes the face shape, and is fashionable and versatile. Suitable for golf, tennis, running, sports, daily wear, or any outdoor activity, suitable for spring summer autumn.