Bonded paper filters are heavier than regular filters and remove even the tiniest sediment particles that slip through ordinary paper. These are the finest filters available for manual pour-over. They're heavier and remove up to 30% more sediment than the CHEMEX branded filters. The less sediment gets through the filter, the cleaner, brighter and more enjoyable will be your coffee. You'll notice the difference with your very first cup. Fits all CHEMEX 6, 8 and 10-cup coffeemakers. Made in Japan.