This is a cushion-type baby bed guard. It's for compact baby beds. (Inner bed dimensions: 90cm x 60cm) It prevents babies from bumping into the hard rails of the baby bed or getting stuck. It also helps prevent accidents. It's the type that ties to the rails of the baby bed with strings, making it easy to attach. I used it for 2-3 months, but I'm selling it because I returned the rental baby bed. There are no noticeable stains, but please understand that it is a used item before purchasing.