Cone shape ensures uniform extraction for pure coffee flavor. All Chemex Coffeemakers used together with the scientifically designed, patented ChemexBonded Filters, will guarantee that this pourover brewing process will deliver the perfect cup of coffee. It's Thicker (20-30% more than the competition) specialty fiber filter design keep bitter elements, oils, and grounds in their place (and out of your cup).
The filters for my Chemex pour-over coffee maker can be expensive. These were not and delivery was free and fast. Can’t get any better than that!