Cushion with elastic band Small size. Stored at home for a long time. Size: Each side is approximately 23cm to 24cm. It varies depending on where you measure, so it's an estimate. Could it possibly be a cushion for a child's bicycle seat? (^_^;) My company's round chair was uncomfortable, so I thought this might be good and bought it, but I never used it. I was carrying a lot of personal belongings from my locker to my desk, so I didn't have room to bring this with me (^_^;) The tag has been cut off, but I've been storing it in a zippered plastic bag. I don't see any dirt or stains. I'm sorry, but I will compress it slightly when shipping.