I am sure you found our website researching the same thing we tried several years ago. After many years of wasting money on expensive disposable humidifier filters we felt there has to be a BETTER solution. Now finding that solution was by no means easy it took us hours of research, days of putting materials together, and months of testing to find the right materials that would both wick water and sustain its form to be washed and reused.  Finally we are changing the way we put humidity back into the air. These filters are made out of a synthetic polymer known as Dura-Ester, and are replacing paper filters world-wide! This NEW plastic material allows you to rejuvenate your filter simply by washing it with cold water, and reusing it over and over again.