Purchased in April 2022 and used only twice. It has been stored in a cardboard box after use. Since a mat was used, there is almost no dirt on the main unit. Overall, there is some dust on the parts that dent when inflated (marked with a circle), so I will clean it once before shipping. Please understand that some may remain. The package will be used as the shipping box. Also, the product will not be specially packaged. Only those who understand this, please (*.ˬ.)