Size: XS=44-46CM S=48-50CM M=52-54CM Material:Made of cotton, soft, comfortable, lightweight and durable. Features: 50+ UPF, protect children's head, eyes, face and neck from strong sunlight. Easy to match and suitable for everyday wear. A variety of patterns can meet your different needs. baby hats are a great gift for birthdays or other important events. Suitable for children from 0 to 8 years old. Note:1. Due to manual measurement, inevitable errors will be caused, please understand. 2. As the colors displayed by different computers are different, the color of the actual product may be slightly different from the above picture, thank you for your understanding. 3. If you have any questions or need further assistance, please contact us via email.