Multi-use coffee filters fold to fit pour-over coffee makers and also fit No. 4 coffee makers. If You Care Coffee Filters are made from unbleached totally chlorine-free (TCF) paper. Like all If You Care paper products, these Coffee Filters are totally chlorine-free, so no chlorine or chlorine derivatives are dumped into our lakes, rivers and streams. Our cone filters feature a strong “never break” patented wave seam, which assures the strength and integrity of the filters. If You Care coffee filters will not negatievely affect the taste of your coffee, like a bleached product may. They will, of course, reduce the amount of pollution in our environment.