Thank you for visiting! To ensure a smooth and responsible transaction for both parties, please read the following: * To avoid potential issues, please refrain from purchasing if you have 3 or more negative ratings. * If you are paying via ATM/convenience store, we will only proceed with the transaction if you can guarantee payment within 24 hours. * For those with fewer than 5 ratings, please leave a comment before purchasing. Others are welcome to purchase directly. * We do not accept price reductions or negotiations. We have disabled the "price registration notification" and will delete any requests without a response. * For bulk purchase requests or those leaving comments, please read the profile first. Even if you don't intend to buy, please indicate your final decision in your comment. * Shipping will be done the next afternoon to the day after. We cannot ship on the same day. * Shipping will be via Yu-Yu Mercari service. Thank you for looking! This was included as an eco-bag when I purchased a large bag yesterday. I believe it is made of rubber, silicone, or a similar material. I will pack it with cushioning material. Thank you.