AEON Topvalu Hat Size: S (56cm) Main fabric (outer): Polyester, Rayon, Others Main fabric (inner): Polyester, Vegetable fiber (Kapok) Although I haven't used it much, it has been stored at home, so please refrain from purchasing if you are concerned. I will fold it to make it compact for packaging. Please be aware that there may be creases. I will ship it using the most affordable method depending on the package size.