It’s a zippered vacuum storage bag. After putting a futon into the bag, you can remove the air out of the bag with a vacuum cleaner to create the vacuum state and reduce the entire size. As a result of it, you can store lots of futons in even small storage space. Out-of-season futons can be stored with this bag. When you take the futon out of the bag, you need to dry them in the sunshine or dry them with a futon drier before using it.
