Approximately 38cm x 38cm. There are two. I quickly rinsed them with water and dried them, but the dirt and especially the dust haven't come off much. Please clean them yourself before use. Thank you for your understanding. They can be used normally, but there are dents. There may be other areas besides the photos. Due to the used condition, such as dents, stains, and dust, I am selling them cheaper than others. If you don't mind the small details, and can accept oversight and simple packaging, please purchase. Please refrain from price negotiations as there are fees, express delivery shipping costs, and packing effort involved. If they don't sell, I plan to delete the listing.