Product: OGK OGK Helmet Size: 49-54 cm SG Standard for bicycles / Product Safety Standard Approved Lightweight design for less strain on the neck Chin strap: One-touch buckle Size can be easily adjusted by turning the adjuster dial attached to the back of the head. Color: Light blue (with white ribbon and heart pattern) Used for about 3 years. Please understand that this item has been used by a child. There are scratches and dirt, but it is still usable. Please check the photos. Size: Child size