Purchased in 2018. My child doesn't like hats, so it hasn't been used much. This is a reversible hat with a ribbon in the back to adjust the size. It has UV protection. The chin strap is also removable! [Size] 44-52cm, adjustable [Material] 100% cotton - Color: Pink-toned check pattern and simple white - Material: Cotton This is a website that explains the features clearly, although it's from a different store (the pattern of the product is discontinued and not sold) ↓ https://item.rakuten.co.jp/auc-giftshoptwins/10000646/