I don't have the details. It might be a prize item. I have stored it without using it. I have checked the zipper's opening and closing. Please refrain from purchasing if you have any concerns. Also, please refrain from purchasing if you are looking for a perfect product. It will be folded for shipping. Please understand. Many people do not provide a receipt evaluation even after 4, 5, or 6 days after the item arrives. If you cannot do this smoothly, please do not purchase. Immediate purchase is not allowed for ATM/convenience store payments. Please comment before purchasing (immediate purchase is OK if you can pay immediately). Please inform me of the payment date via the transaction message. I am having trouble with non-payment and late or missing receipt evaluations. Please purchase only if you can conduct a smooth transaction. Please be sure to read the description and profile as well. Thank you.