This is a hat from Hakka Kids. The size is L. It's about 52-54 cm, give or take, as I measured it myself. It has been used, but I think there are no noticeable stains or scratches. It can also be made into a ten-gallon hat with the buttons, and it's a very cute item. I want to have a pleasant transaction, so please send me a message before purchasing if you have any questions(^^) #HakkaKids #HAKKA