Suitable for boys and girls aged 3 over, especially those who need to study or rest in noisy environments. Adjustable headband, suitable for children of different ages. Lovely small dinosaur earmuffs attract children's attention and protect their ears from noise damage. Suitable for schools, kindergartens, and travel, protecting children's hearing health. Suitable for boys, girls, and children to use; Soft and comfortable component that does not bring senses of oppression to children.