Thank you for viewing. Please refrain from purchasing if you are sensitive to used items. Diameter: Approximately 28.5cm Regarding shipping: We will ship within 2-3 days after confirming payment. However, please note that shipping may be delayed on weekends, holidays, and during long breaks such as Golden Week, Obon, and New Year's holidays. Also, we will use cushioning material to prevent breakage and pack the item, but it will be shipped in simple packaging, so we appreciate your understanding. If you have any questions, please feel free to ask in the comments section.