Product review (2 stars): Not the filters I'm used to using...going back!
I usually buy the filters for my Vicks Germ-Free Humidifier at Walmart, where I purchased the unit itself. I bought these thinking it would save me a trip to the store. Wrong!  These are not what you purchase at the store. They seem to be made out of a plastic-type material.  Before deciding to return them, I went to Walmart and bought the filters I normally purchased. The Walmart humidifier filter (sold under the brand name "ProCare") have a type of aluminum insert within the filter itself, which these did not.  As I know the filters from Walmart work very well in my unit, I am erring on the side of caution and returning these and stocking up on the ones from Walmart in case they decide to discontinue them (you just never know these days when something you like is going to be discontinued!). Fortunately Amazon was great and I am able to return them to the vendor and looking forward to my getting my refund.