Product review (1 stars): Junk.
I have loved the humidifier but these replacement wicking filters are terrible. After a month of use I'm resorting to safety pins  to keep it joined together and interweaving wooden shish kabob skewers to add some structure to it trying to get it to stand. Invariably it just slumps in a mass at the bottom and therefore does not efficiently humidify. I have to believe this is by design to get you to purchase replacements more frequently. Bad plan. I am shopping alternative parts.