Cardboard reinforcement on one side + protection against water damage only. [ATTENTION] * Regardless of whether the item is new or used, everything is stored and inspected by a private individual, so please refrain from purchasing if you are looking for a perfect product. Also, there may be initial scratches, etc. We cannot provide any support for such issues. * I have a cat. There is a risk of cat hair getting mixed in, no matter how careful I am. Please refrain from purchasing if you are concerned or have allergies. * Recycled packaging may be used, but the minimum packaging will be provided. If there is a description in the product description, that takes precedence. * Shipping method: May change from Rakuraku to Yuuyu or vice versa. If you pay the difference, we will accommodate your request as much as possible. In that case, there may be discrepancies due to home weighing (we cannot handle any overage or shortage). We are not responsible for any shipping accidents. * In the case of convenience store payment, please let us know the specific payment date after purchase. If we cannot confirm the payment within 24 hours of purchase, we will cancel the order. * Reading the profile is not required, but we will not be responsible for any problems caused by not reading it. Purchasing the item means that you agree to the terms stated in the profile section/product page.