I think they are after sale and they are quite tight and a bit difficult to fit but that can be good as they can trap more dust. They arrived lightning fast, a day after I ordered them, and so far they're holding up well. I will buy them again when my original ones wear out. When your original filters wear out I would buy 2 sets to swap between them so you don't have to wait for them to dry after washing before vacuuming again. I highly recommend them.