【Instant Purchase OK】 Abonet Protective Hat for Caregiving, Injury Prevention, Head Protection, Child, Head Cap, Headgear abonet Active Core Size: S-M (48-54cm) Approximately 250g Color: Blue Headgear-style protective hat designed specifically for sports. The Velcro on the back of the head allows for a wide range of size adjustments. My 3-year-old child used this for only six months at nursery school. It wasn't used every day, so there isn't much damage, and I think it can still be used. I am selling it because I purchased a larger size. I will ship it anonymously via Rakuraku Mercari (Yamato Takkyubin). Please feel free to comment if you have any questions.