This is a children's flight cap that I previously purchased from an online shopping site. There is no size indication, but when measured with a measuring tape, the head circumference is approximately 55-57cm. Please allow for some error. The surface is corduroy fabric and the inside is fluffy fabric. I had several hats, so I didn't wear this one very often, but please refrain from purchasing if you are overly concerned about its condition. Only those who understand are welcome to purchase. #FlightCap #FlightCap