Product review (5 stars): Work great - great deal!
Our toddler has had breathing problems on and off, so we needed to find a good humidifier for his room.  Most of the cute little character ones are just breading grounds for mold, which is then sent back into the air through the mist (believe me, we've been down that road a few times).  We decided on the humidifier that these fit purely because of these filters.  They're disposable, so once the collect all the mold and guck you can toss them instead of putting it all back into the air.

As for filters, these were the best bargain I found.  They are easy to replace and work well in the humidifier.  They come in a package of 2, so I'll need to reorder less often.  They fit the humidifier as stated.

I really recommend this kind of humidifier.  After much research and speaking to physicians, this is the way to go!