Material: 100% polyesterProduct performance: The hat body is a single-layer fabric without lining and fits the head well. The back has an adjustable snap design, which can adjust the hat size freely. It can be used in all seasons. The vent design is not stuffy and the hat is light and easy to carry. The color adopts a splicing design, which is more eye-catching, and there are multiple color choices to meet different needs.Applicable scenarios: daily, outdoor activities, sports, travel, etc.Applicable people: UnisexSpecial instructions: Due to different measurement methods, the size data has an error of within 1-2 cm, which is normal.