A. This children's open-top baseball cap is designed specifically for children and is suitable for wearing in spring and summer. It has a variety of practical functions to meet the needs of children during outdoor activities. B. In terms of design, the cap has a round top and a curved brim, which is both stylish and versatile. This style combines street and personalized elements, allowing children to show their unique charm. C. In terms of fabric, polyester fiber is selected, with the main fabric component content exceeding 96%. This fabric has functions such as sun protection, quick drying, breathability, protection, wind resistance, and sunshading. When children are doing outdoor activities, it can effectively block ultraviolet rays, keep their heads dry, and allow their skin to breathe freely. Even in hot summer, children can feel comfortable. D. It is available in a variety of sizes, including S (52 - 54 cm) and M (56 - 58 cm), suitable for children with different head circumferences. It has a wide age range of application, from 1 - 2 years old to over 10 years old. Children of all ages can find a suitable hat. Whether it is for daily outings, sports and play, or outdoor activities, this hat is a good choice. It is both practical and stylish, enabling children to add a unique sense of fashion while enjoying the summer time.