The purchase site stated a diameter of 30cm. Perfect for sports festivals, cosplay, etc.? It's more of a semicircle than a perfect circle, but it might become closer to a circle if you spread it out a bit more carefully. It will be shipped in the state shown on the left, secured with a rubber band or plastic wrap to prevent water damage. Please note that there may be creases due to packaging to fit within the size regulations. Immediate purchase ○ No price reduction Please read my profile before purchasing or commenting.