The size is 25cm. The condition is a very beautiful, like-new item with no noticeable scratches or stains, but please check the photos before purchasing. This item has only been tried on, but please refrain from purchasing if you are overly concerned about minor details. We inspect each item for stains and damage before listing, but there may be instances where we overlook something. The color may appear slightly different from the actual product due to differences in monitors and browsers. When shipping, we will fold the item as compactly as possible within a reasonable range due to its size. To prevent replacement-related issues, we do not accept returns, so please be aware of this beforehand. Thank you for viewing.