The quick dry sports cap fits most adults head size. High quality Polyester and stitching process. Made of quick dry polyester material, which is very durable, breathable and comfortable. The breathable mesh air vents, aids the ventilation, and the Pre-Curved, long shaped, keeps the sun from your face and offers great protection from the damaging rays. Wonderful and solid stitching process, comfortable and lightweight hat material. The metal buckle adjustment fits various sizes of heads and you can easily get a custom fit according to your head size, the plain color suits all ages. It is perfect for any outdoor sports and activities in the upcoming hot weather. Please Do Not Machine Wash or Brush Wash.