Mezzo Piano children's helmet, size 49cm-54cm, CBA-3M model. - Brand: Mezzo Piano - Type: Children's helmet - Size: 49cm-54cm - Model: CBA-3M Thank you for viewing. Used about 5 times and then stored. There is dirt on the sticker part and small scratches on the surface due to storage. Please check the images for the degree of scratches and dirt. The size can be easily adjusted because the inside can be adjusted with a dial.