Product review (5 stars): great replacement filter
My old filter for my humidifier had bit the dust so I ordered this one.  I am very pleased with the quality of it.  I was afraid it might be cheaply made, but to my very pleasant surprise,  it is act very well made.  My toddler got ahold of it and it survived him wearing it as a hat.  He was not able to tear it apart.  I was impressed.

The pros
1. Fits Honeywell Nature Cool Moisture Humidifiers requiring Filter A
2. Cost Effective Alternative to the OEM
3. Antimicrobial treatment helps prevent the growth and migration of mold, fungus and bacteria on the filter (my old one had grown nasty mold)

The cons
I can't think of any, this is a very nice product

I would definitely recommend this filter replacement to any one looking for one.  The quality is by far better than what came with my humidifier originally. I received this product for free in wxc6for my honest non biased option.