Children's Knit Hat Size: Unknown The inside is made of fleece material and is very warm. My daughter bought this when she was in the lower grades of elementary school, but she doesn't like wearing knit hats because she gets hot easily... She only wore it about twice. The item is in very clean condition. *Please understand that this is a used item before purchasing. *Shipping will be done in a compact package. Please be aware of any creases. Thank you for looking.