Product Material: Our trucker hat is made of polyester fiber, which has good breathability, light weight, and is easy to clean Product size: The mesh trucker hat features an adjustable plastic buckle design, suitable for most men and women. The blank mesh hat is 4.72 inches (12 centimeters) high and comes with an adjustable buckle, suitable for most head circumferences of 22.05 to 24.41 inches (56 to 62 centimeters), with a brim width of 3.54 inches (9 centimeters) DIY creativity: blank mesh caps suitable for parent-child family painting and graffiti creation, personal creative hot stamping, advertising design, heat transfer printing creativity Target audience scenario: This blank hat is suitable for truck drivers, company gatherings, outdoor sports, brand promotion, and advertising design. The hat is easy to wear, sweat absorbing and breathable, and the brim effectively blocks ultraviolet rays, making it cost-effective Washing method: Outdoor sports sun hats can only be hand washed and cannot be bleached or dried