Introducing Headgear Size: M (53-56cm) *Suitable for elementary to junior high school students Color: Black Weight: 42.5g *Lighter than a baseball cap Features: The material stretches in all directions, providing a comfortable fit. Specifically designed to protect the temples, sides of the head, and the center of the back of the head. It has almost no impact on direction or speed when heading the ball. The inside uses quick-drying fabric. I purchased this through crowdfunding by former Japan national soccer team player Kota Yoshihara, but my child never used it and stopped playing soccer after graduating from elementary school. Would you like this to prevent injuries for your child? Thank you.