This is a limited edition graphic design children's helmet from ATOMIC. It's quite rare and difficult to find online. I believe it cost a little over 30,000 yen when I bought it. Size M (55-59cm) I cannot answer any questions regarding size other than the numbers listed above. Returns due to incorrect size will not be accepted. The goggle strap was originally clear, but has yellowed with age. Please check the photos. A sticker from Kiroro Resort in Hokkaido is affixed to the front. Features ventilation. - Brand: ATOMIC - Color: White/Yellow/Black/Red - Design: Graphic Design - Accessories: Strap and inner lining included